:root {
    /* Main Palette */
    --primary-color: #2A7FFF; /* Bright, trustworthy blue */
    --primary-color-dark: #1A6ADA;
    --secondary-color: #34495E; /* Dark, muted blue/grey */
    --accent-color: #FF9900; /* Vibrant orange */
    --accent-color-dark: #E68A00;

    /* Neutrals */
    --bg-color: #F8F9FA; /* Light grey for body */
    --card-bg-color: #FFFFFF;
    --text-color: #333333;
    --text-color-light: #555555;
    --subtle-text-color: #6c757d;
    --border-color: #DEE2E6;
    --input-bg-color: #FFFFFF;
    --input-border-color: #CED4DA;
    --hover-bg-color: #F1F3F5; /* For subtle hovers */

    /* Semantic Colors */
    --success-color: #28a745;
    --error-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #17a2b8;

    /* Typography */
    --font-family-headings: 'Montserrat', sans-serif;
    --font-family-body: 'Roboto', sans-serif;
    --font-size-base: 16px;
    --line-height-base: 1.6;

    /* UI Elements */
    --border-radius-sm: 0.25rem; /* 4px */
    --border-radius-md: 0.5rem;  /* 8px */
    --border-radius-lg: 0.75rem; /* 12px */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 8px rgba(0,0,0,0.07);
    --shadow-lg: 0 10px 20px rgba(0,0,0,0.08);
    --transition-speed: 0.2s;
    --transition-func: ease-in-out;
}

/* Dark Theme Variables */
html[data-theme='dark'] {
    --primary-color: #3A8EFF;
    --primary-color-dark: #2A7FFF;
    --secondary-color: #AAB8C5;
    --accent-color: #FFA726;
    --accent-color-dark: #FF9900;

    --bg-color: #121212;
    --card-bg-color: #1E1E1E;
    --text-color: #E0E0E0;
    --text-color-light: #BDBDBD;
    --subtle-text-color: #9E9E9E;
    --border-color: #3A3A3A;
    --input-bg-color: #2C2C2C;
    --input-border-color: #4A4A4A;
    --hover-bg-color: #252525;

    --shadow-sm: 0 2px 4px rgba(255,255,255,0.05);
    --shadow-md: 0 4px 8px rgba(255,255,255,0.07);
    --shadow-lg: 0 10px 20px rgba(255,255,255,0.08);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family-body);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: var(--line-height-base);
    font-size: var(--font-size-base);
    transition: background-color var(--transition-speed) var(--transition-func), color var(--transition-speed) var(--transition-func);
}

.app-container { /* Renamed from .container to avoid clash with Bootstrap's .container */
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.header {
    padding: 25px 0;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 20px;
}

.logo-container h1 {
    font-family: var(--font-family-headings);
    font-weight: 800;
    font-size: 2.2rem; /* Increased size */
    margin: 0;
}
.logo-container h1 a {
    text-decoration: none;
}
.logo-smart { color: var(--secondary-color); }
.logo-price { color: var(--primary-color); }
html[data-theme='dark'] .logo-smart { color: var(--text-color-light); }


.language-switcher {
    display: flex;
    gap: 10px;
    align-items: center;
}
.language-switcher a {
    color: var(--subtle-text-color);
    text-decoration: none;
    font-weight: 500;
    padding: 8px 12px;
    border-radius: var(--border-radius-md);
    transition: background-color var(--transition-speed) var(--transition-func), color var(--transition-speed) var(--transition-func);
}
.language-switcher a:hover {
    background-color: var(--hover-bg-color);
    color: var(--primary-color);
}
.language-switcher a.active {
    color: var(--card-bg-color); /* White or dark card bg */
    background-color: var(--primary-color);
    font-weight: 600;
}
html[data-theme='dark'] .language-switcher a.active {
    color: var(--bg-color);
}

.user-actions {
    display: flex;
    align-items: center;
    gap: 15px;
}
.feedback-link-header {
    color: var(--secondary-color);
    text-decoration: none;
    font-weight: 500;
    padding: 8px 12px;
    border-radius: var(--border-radius-md);
    transition: background-color var(--transition-speed), color var(--transition-speed);
}
.feedback-link-header:hover {
    background-color: var(--hover-bg-color);
    color: var(--primary-color);
}
.feedback-link-header i { margin-right: 6px; }

.user-nav {
    display: flex;
    gap: 10px;
}
.user-nav .nav-link {
    color: var(--secondary-color);
    text-decoration: none;
    font-weight: 500;
    padding: 8px 12px;
    border-radius: var(--border-radius-md);
    transition: background-color var(--transition-speed) var(--transition-func), color var(--transition-speed) var(--transition-func);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.user-nav .nav-link:hover:not(.btn) { /* Don't apply hover to buttons here */
    background-color: var(--hover-bg-color);
    color: var(--primary-color);
}
.user-nav .nav-link.btn-sm { /* Adjust Bootstrap buttons in nav */
    padding: 6px 12px;
    font-size: 0.9rem;
}


/* Main Content */
.main-content {
    padding: 0 0 30px 0; /* Adjusted padding */
    flex: 1;
}

/* Cards */
.card, .auth-card, .error-card {
    background: var(--card-bg-color);
    border-radius: var(--border-radius-lg); /* Larger radius */
    box-shadow: var(--shadow-md);
    padding: 30px;
    margin: 0 auto 30px auto; /* Added bottom margin */
    border: 1px solid var(--border-color);
    transition: background-color var(--transition-speed), box-shadow var(--transition-speed);
}
.auth-card {
    max-width: 520px; /* Slightly wider */
    width: 100%;
    padding: 35px 40px; /* More padding */
}
.error-card {
    max-width: 600px;
    padding: 3rem;
    text-align: center;
}
.card:hover, .auth-card:hover {
    box-shadow: var(--shadow-lg);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-headings);
    color: var(--secondary-color);
    margin-bottom: 0.75em; /* Consistent bottom margin */
    font-weight: 600;
    line-height: 1.3;
}
html[data-theme='dark'] h1,
html[data-theme='dark'] h2,
html[data-theme='dark'] h3,
html[data-theme='dark'] h4,
html[data-theme='dark'] h5,
html[data-theme='dark'] h6 {
    color: var(--text-color);
}

h1 { font-size: 2.5rem; font-weight: 700;}
h2 { font-size: 2rem; margin-bottom: 25px; text-align: center;}
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
.auth-header h2 { font-size: 1.8rem; }
.auth-header p { color: var(--subtle-text-color); margin-bottom: 25px; text-align: center; }


.lead {
    font-size: 1.25rem; /* Slightly adjusted */
    color: var(--text-color-light);
    margin-bottom: 2rem;
    font-weight: 300;
}
p { margin-bottom: 1rem; color: var(--text-color-light); }
a { color: var(--primary-color); text-decoration: none; transition: color var(--transition-speed); }
a:hover { color: var(--primary-color-dark); text-decoration: underline; }

/* Forms */
.form-group {
    margin-bottom: 20px;
}
label, .form-label { /* .form-label for Bootstrap compatibility */
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-color); /* Darker labels */
    font-size: 0.95rem;
}
label i, .form-label i {
    margin-right: 8px;
    color: var(--primary-color);
}

input[type="url"],
input[type="text"],
input[type="email"], /* Added email type */
input[type="password"], /* Added password type */
input[type="number"],
textarea.form-control, /* Target textarea specifically */
select.form-control, /* Target select specifically */
.form-control { /* General form control styling */
    width: 100%;
    padding: 12px 16px; /* Adjusted padding */
    border: 1px solid var(--input-border-color);
    border-radius: var(--border-radius-md);
    font-size: 1rem;
    transition: border-color var(--transition-speed), box-shadow var(--transition-speed);
    background-color: var(--input-bg-color);
    color: var(--text-color);
    line-height: var(--line-height-base);
}
textarea.form-control {
    min-height: 120px; /* Give textareas some height */
}

.input-with-icon { position: relative; }
.input-with-icon .fas, .input-with-icon .fab { /* Target FontAwesome icons */
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--subtle-text-color);
    pointer-events: none; /* So it doesn't interfere with input focus */
}
.input-with-icon .form-control { padding-left: 45px; }

input:focus,
textarea.form-control:focus,
select.form-control:focus,
.form-control:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 0.2rem rgba(var(--primary-color), 0.25); /* Bootstrap-like focus */
}
.form-control:focus {
     box-shadow: 0 0 0 3px rgba(42, 127, 255, 0.2); /* Approximation of --primary-color with alpha */
}
html[data-theme='dark'] .form-control:focus {
    box-shadow: 0 0 0 3px rgba(58, 142, 255, 0.25); /* Dark theme focus */
}


.hint, small.form-text { /* .form-text for Bootstrap compatibility */
    display: block;
    margin-top: 6px;
    font-size: 0.85rem;
    color: var(--subtle-text-color);
}

/* Buttons */
.btn, .submit-btn, .auth-submit, .auth-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: var(--font-family-body); /* Consistent font */
    font-weight: 600;
    font-size: 1rem;
    padding: 12px 24px;
    border-radius: var(--border-radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    text-align: center;
    text-decoration: none;
    white-space: nowrap;
    transition: all var(--transition-speed) var(--transition-func);
    position: relative;
    overflow: hidden; /* For ripple */
    user-select: none;
}
.btn i, .submit-btn i, .auth-submit i, .auth-button i {
    font-size: 1em; /* Relative to button font size */
    /* margin-right: 8px; (replaced by gap) */
}

.btn-primary, .submit-btn, .auth-submit { /* Main action buttons */
    background-color: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
}
.btn-primary:hover, .submit-btn:hover, .auth-submit:hover {
    background-color: var(--primary-color-dark);
    border-color: var(--primary-color-dark);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.btn-secondary, .auth-button.secondary {
    background-color: var(--card-bg-color);
    color: var(--primary-color);
    border-color: var(--primary-color);
}
.btn-secondary:hover, .auth-button.secondary:hover {
    background-color: var(--primary-color);
    color: var(--card-bg-color);
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}
html[data-theme='dark'] .btn-secondary,
html[data-theme='dark'] .auth-button.secondary {
    color: var(--primary-color); /* Blue text on dark still looks good */
    border-color: var(--primary-color);
}
html[data-theme='dark'] .btn-secondary:hover,
html[data-theme='dark'] .auth-button.secondary:hover {
    background-color: var(--primary-color);
    color: var(--bg-color); /* Dark text for contrast */
}


.btn-outline-primary {
    color: var(--primary-color);
    border-color: var(--primary-color);
    background-color: transparent;
}
.btn-outline-primary:hover {
    color: #fff;
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-success { background-color: var(--success-color); color: #fff; border-color: var(--success-color); }
.btn-success:hover { background-color: darken(var(--success-color), 10%); border-color: darken(var(--success-color), 10%); color: #fff; }
.btn-error, .btn-danger { background-color: var(--error-color); color: #fff; border-color: var(--error-color); } /* .btn-danger for BS */
.btn-error:hover, .btn-danger:hover { background-color: darken(var(--error-color), 10%); border-color: darken(var(--error-color), 10%); color: #fff; }

.btn-sm {
    padding: 8px 16px;
    font-size: 0.9rem;
}
.btn-lg {
    padding: 14px 28px;
    font-size: 1.1rem;
}

.btn:disabled, .submit-btn:disabled, .auth-submit:disabled {
    opacity: 0.65;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* Ripple effect for buttons (optional, from existing styles) */
.btn::after, .submit-btn::after, .auth-submit::after, .auth-button::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 5px;
    height: 5px;
    background: rgba(255, 255, 255, 0.5);
    opacity: 0;
    border-radius: 100%;
    transform: scale(1, 1) translate(-50%, -50%); /* Adjusted transform */
    transform-origin: 50% 50%;
}
.btn:focus:not(:active)::after,
.submit-btn:focus:not(:active)::after,
.auth-submit:focus:not(:active)::after,
.auth-button:focus:not(:active)::after {
    animation: ripple 0.6s ease-out;
}
@keyframes ripple {
    0% { transform: scale(0, 0) translate(-50%, -50%); opacity: 0.5; }
    100% { transform: scale(30, 30) translate(-50%, -50%); opacity: 0; } /* Increased scale */
}


/* Checkboxes & Radio */
.checkbox-group { display: flex; flex-direction: column; gap: 12px; margin-top: 15px; }
.checkbox-item, .checkbox-label, .checkbox-container, .remember-me {
    display: flex;
    align-items: center;
    cursor: pointer;
    position: relative;
    padding-left: 30px; /* Space for custom checkbox */
    user-select: none;
    color: var(--text-color);
    font-size: 0.95rem;
}
.checkbox-item input, .checkbox-label input, .checkbox-container input, .remember-me input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}
.checkmark {
    position: absolute;
    top: 50%;
    left: 0;
    transform: translateY(-50%);
    height: 20px; /* Slightly larger */
    width: 20px;
    background-color: var(--input-bg-color);
    border: 1px solid var(--input-border-color);
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-speed) var(--transition-func);
}
.checkbox-item:hover input ~ .checkmark,
.checkbox-label:hover input ~ .checkmark,
.remember-me:hover input ~ .checkmark {
    border-color: var(--primary-color);
}
.checkbox-item input:checked ~ .checkmark,
.checkbox-label input:checked ~ .checkmark,
.remember-me input:checked ~ .checkmark {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}
.checkmark:after {
    content: "";
    position: absolute;
    display: none;
    left: 6px; /* Adjusted for new size */
    top: 2px;  /* Adjusted for new size */
    width: 5px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}
.checkbox-item input:checked ~ .checkmark:after,
.checkbox-label input:checked ~ .checkmark:after,
.remember-me input:checked ~ .checkmark:after {
    display: block;
}

/* Form Options (e.g., remember me & forgot password) */
.form-options, .form-actions, .remember-forgot { /* .remember-forgot from login.html */
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 20px 0;
    font-size: 0.9rem;
}
.forgot-password { color: var(--primary-color); }
.forgot-password:hover { color: var(--primary-color-dark); }

/* Auth Divider */
.auth-divider {
    display: flex;
    align-items: center;
    text-align: center;
    margin: 25px 0;
    color: var(--subtle-text-color);
    font-size: 0.9rem;
}
.auth-divider::before, .auth-divider::after {
    content: '';
    flex: 1;
    border-bottom: 1px solid var(--border-color);
}
.auth-divider span { padding: 0 15px; }
.auth-footer {
    text-align: center;
    margin-top: 25px;
    font-size: 0.95rem;
    color: var(--text-color-light);
}
.auth-footer a { font-weight: 600; }


/* Flash Messages */
.flash-messages-container { /* Added a container */
    margin-bottom: 25px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.flash {
    padding: 15px 20px; /* More padding */
    border-radius: var(--border-radius-md);
    font-weight: 500;
    display: flex;
    align-items: center;
    border: 1px solid transparent;
    box-shadow: var(--shadow-sm);
}
.flash i { margin-right: 12px; font-size: 1.2em; }
.flash.success, .flash-success { /* Added .flash-success for BS compatibility */
    background-color: #E6F6EC; /* Lighter green */
    color: #1E7541; /* Darker green text */
    border-color: #B8E0C8;
}
.flash.error, .flash-danger { /* Added .flash-danger for BS compatibility */
    background-color: #FDEDED; /* Lighter red */
    color: #B52B2B; /* Darker red text */
    border-color: #F5CACA;
}
.flash.warning {
    background-color: #FFF8E1;
    color: #C28804;
    border-color: #FFECB3;
}
.flash.info {
    background-color: #E1F5FE;
    color: #02718C;
    border-color: #B3E5FC;
}
html[data-theme='dark'] .flash.success { background-color: #1A3A24; color: #A6D9B8; border-color: #3A6446; }
html[data-theme='dark'] .flash.error   { background-color: #3A1A1A; color: #D9A6A6; border-color: #643A3A; }
html[data-theme='dark'] .flash.warning { background-color: #3A301A; color: #D9C4A6; border-color: #64553A; }
html[data-theme='dark'] .flash.info    { background-color: #1A303A; color: #A6C4D9; border-color: #3A5564; }

/* Error Messages & Invalid Feedback */
.error, .invalid-feedback, .error-message {
    color: var(--error-color);
    font-size: 0.85rem;
    margin-top: 6px;
    display: flex;
    align-items: center;
    gap: 5px;
}
.form-control.is-invalid, .was-validated .form-control:invalid { /* Bootstrap classes */
    border-color: var(--error-color) !important; /* Important to override BS */
    padding-right: calc(1.5em + .75rem);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' width='12' height='12' fill='none' stroke='%23dc3545'%3e%3ccircle cx='6' cy='6' r='4.5'/%3e%3cpath stroke-linejoin='round' d='M5.8 3.6h.4L6 6.5z'/%3e%3ccircle cx='6' cy='8.2' r='.6' fill='%23dc3545' stroke='none'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right calc(.375em + .1875rem) center;
    background-size: calc(.75em + .375rem) calc(.75em + .375rem);
}
.form-control.is-valid, .was-validated .form-control:valid {
    border-color: var(--success-color) !important;
     /* Add valid icon if desired */
}

/* Info Button & Instructions */
.info-btn {
    background: none;
    border: none;
    color: var(--primary-color);
    text-decoration: underline;
    cursor: pointer;
    padding: 0;
    margin-left: 10px;
    font-size: 0.9rem;
    font-weight: 500;
}
.info-btn:hover { color: var(--primary-color-dark); text-decoration: none; }

#telegram-instructions, #url-instructions {
    margin-top: 15px;
    padding: 20px;
    background: var(--hover-bg-color);
    border-radius: var(--border-radius-md);
    border-left: 4px solid var(--primary-color);
    font-size: 0.9rem;
}
#telegram-instructions h4, #url-instructions h4 { margin-bottom: 15px; font-size: 1.2rem; color: var(--primary-color); }
.instruction-step { margin-bottom: 15px; padding-bottom: 15px; border-bottom: 1px dashed var(--border-color); }
.instruction-step:last-child { margin-bottom: 0; padding-bottom: 0; border-bottom: none; }
.instruction-step h5 { color: var(--secondary-color); margin-bottom: 8px; font-size: 1rem; font-weight: 600; }
.instruction-image { max-width: 100%; border: 1px solid var(--border-color); border-radius: var(--border-radius-sm); margin-top: 10px; }
code { background-color: var(--border-color); padding: 2px 6px; border-radius: var(--border-radius-sm); font-family: monospace; color: var(--secondary-color); }
html[data-theme='dark'] code { background-color: #333; color: var(--text-color-light); }

/* Features Section (from product_index.html) */
.features {
    display: grid; /* Changed to grid */
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); /* Responsive columns */
    gap: 25px;
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
}
.feature {
    text-align: center;
    padding: 25px;
    background: var(--card-bg-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-speed) var(--transition-func), box-shadow var(--transition-speed) var(--transition-func);
}
.feature:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}
.feature i.fas, .feature i.fab { /* Target FontAwesome */
    font-size: 2.5rem; /* Larger icons */
    color: var(--primary-color);
    margin-bottom: 20px;
    display: block; /* Ensure it takes space */
}
.feature h3 {
    font-family: var(--font-family-headings);
    margin-bottom: 10px;
    font-size: 1.25rem; /* Adjusted size */
    color: var(--secondary-color);
}
.feature p {
    color: var(--subtle-text-color);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* Footer */
.footer {
    text-align: center;
    padding: 30px 0; /* More padding */
    color: var(--subtle-text-color);
    font-size: 0.9rem;
    margin-top: auto; /* Pushes footer to bottom */
    border-top: 1px solid var(--border-color);
}
.social-links { margin-top: 15px; }
.social-links a {
    color: var(--subtle-text-color);
    margin: 0 12px; /* Increased spacing */
    font-size: 1.5rem; /* Larger icons */
    transition: color var(--transition-speed);
}
.social-links a:hover { color: var(--primary-color); }

/* Theme Toggle Button */
.theme-toggle-btn {
    position: fixed;
    bottom: 20px; /* Changed to bottom */
    right: 20px;
    z-index: 1000;
    width: 45px; /* Slightly larger */
    height: 45px;
    background-color: var(--card-bg-color);
    border: 1px solid var(--border-color);
    border-radius: 50%; /* Circular */
    cursor: pointer;
    font-size: 22px; /* Adjusted icon size */
    color: var(--text-color);
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-speed);
}
.theme-toggle-btn:hover {
    background-color: var(--hover-bg-color);
    transform: scale(1.1);
}
.theme-toggle-btn::before { content: "☀️"; } /* Sun icon */
html[data-theme='dark'] .theme-toggle-btn::before { content: "🌙"; } /* Moon icon */

/* Hidden Elements */
.hidden { display: none !important; } /* Important to override other display properties if needed */

/* Profile & Settings Specific Styles (Integrate and Refine) */
.profile-summary {
    background-color: var(--hover-bg-color);
    border-radius: var(--border-radius-lg);
    padding: 25px;
    margin-bottom: 30px;
    border: 1px solid var(--border-color);
}
.profile-summary p {
    margin-bottom: 12px;
    font-size: 1.05rem;
    color: var(--text-color-light);
}
.profile-summary strong {
    color: var(--secondary-color);
    font-weight: 600; /* Ensure strong is bold */
    margin-right: 8px;
}
html[data-theme='dark'] .profile-summary strong { color: var(--text-color); }

.success-text { color: var(--success-color); font-weight: 600; }
.price-drop-icon { color: var(--success-color); margin-left: 5px; }
.price-increase-icon { color: var(--error-color); margin-left: 5px; }
.price-value { font-weight: 700; color: var(--accent-color); } /* Orange for prices */

.profile-actions { margin-top: 30px; text-align: center; display: flex; gap: 15px; justify-content: center; flex-wrap: wrap;}
.profile-actions .btn { width: auto; min-width: 180px; }

.settings-section {
    margin-bottom: 35px;
    padding-bottom: 25px;
    border-bottom: 1px dashed var(--border-color);
}
.settings-section:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
.settings-section h3 {
    font-size: 1.5rem; /* Slightly larger section titles */
    color: var(--secondary-color);
    margin-bottom: 25px;
    text-align: left;
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 12px;
    display: inline-block;
}
html[data-theme='dark'] .settings-section h3 { color: var(--text-color); }

.settings-section .btn, .settings-section .auth-button { /* Ensure buttons in settings take full width or behave as intended */
    /* width: 100%; (Re-evaluate if full-width is always desired) */
    margin-bottom: 10px;
}

/* Product List (Dashboard / Profile) */
.product-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); /* Wider items */
    gap: 25px;
    margin-top: 25px;
}
.product-list .product-item {
    background-color: var(--card-bg-color);
    padding: 25px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
    display: flex;
    flex-direction: column; /* Ensure content flows well */
}
.product-list .product-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}
.product-list .product-item h3.product-name {
    font-size: 1.35rem; /* Larger product name */
    margin-bottom: 12px;
    color: var(--secondary-color);
    text-align: left;
    font-weight: 600;
}
html[data-theme='dark'] .product-list .product-item h3.product-name { color: var(--text-color); }

.product-list .product-item h3.product-name a { text-decoration: none; color: inherit; }
.product-list .product-item h3.product-name a:hover { color: var(--primary-color); }
.product-list .product-item p {
    margin-bottom: 10px;
    font-size: 0.95rem;
    color: var(--text-color-light);
    line-height: 1.5;
}
.product-list .product-item p strong { color: var(--secondary-color); font-weight: 600; }
html[data-theme='dark'] .product-list .product-item p strong { color: var(--text-color); }

.product-list .product-item .product-actions {
    margin-top: auto; /* Pushes actions to the bottom of the card */
    padding-top: 15px; /* Space above actions */
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    border-top: 1px solid var(--hover-bg-color); /* Subtle separator */
}
.product-list .product-item .product-actions .btn-sm {
    padding: 8px 15px;
    font-size: 0.85rem;
    font-weight: 500; /* Lighter weight for small action buttons */
}

/* Compact Product List (e.g., for a small dashboard widget) */
.product-list-compact .product-item {
    background-color: var(--input-bg-color);
    padding: 15px 20px;
    border-radius: var(--border-radius-md);
    margin-bottom: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border: 1px solid var(--border-color);
    transition: background-color var(--transition-speed);
}
.product-list-compact .product-item:hover {
    background-color: var(--hover-bg-color);
}
.product-list-compact .product-item:last-child { margin-bottom: 0; }
.product-list-compact .product-name { font-weight: 600; margin: 0; flex-grow: 1; color: var(--text-color); }
.product-list-compact .product-price { font-size: 0.95rem; color: var(--subtle-text-color); white-space: nowrap; }


/* Responsive Adjustments */
@media (max-width: 992px) { /* For larger tablets */
    .header {
        flex-direction: column;
        align-items: flex-start; /* Align items to the start for column layout */
    }
    .logo-container { width: 100%; text-align: center; margin-bottom: 15px; }
    .user-actions { width: 100%; justify-content: space-between; }
}

@media (max-width: 768px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    .auth-card { padding: 25px 20px; }
    .card { padding: 20px; }
    .language-switcher {
        /* position: static; (already handled by flexbox wrapping) */
        margin-bottom: 15px;
        width: 100%;
        justify-content: center;
    }
    .features { grid-template-columns: 1fr; } /* Stack features on smaller screens */
    .profile-actions .btn { min-width: 150px; }
    .product-list { grid-template-columns: 1fr; } /* Stack product items */
}

@media (max-width: 600px) {
    .error-card { padding: 2rem 1.5rem; margin-top: 3rem; }
    .btn, .submit-btn, .auth-submit { font-size: 0.95rem; padding: 10px 18px; } /* Slightly smaller buttons */
    .remember-forgot { flex-direction: column; align-items: flex-start; gap: 10px; }
    .user-nav { flex-direction: column; align-items: stretch; width: 100%;}
    .user-nav .nav-link { text-align: center; }
    .feedback-link-header { width: 100%; text-align: center; margin-bottom: 10px;}
    .user-actions { flex-direction: column; }
}

.card.tracking-form-wrapper {
    max-width: 700px;
    margin: 0 auto;
}

select.form-control {
    width: 100%;
    height: 100%
}

.checkbox-container {
  position: relative;
  display: flex;
  align-items: center;
  padding-left: 30px;
  margin-bottom: 12px;
  cursor: pointer;
  font-size: 16px;
}

.checkbox-container input {
  position: absolute;
  opacity: 0;
  cursor: pointer;
  height: 0;
  width: 0;
}

.checkbox-container .checkmark {
  position: absolute;
  left: 0;
  top: 0;
  height: 20px;
  width: 20px;
  border-radius: 4px;
  border: 1px solid #aaa;
}

.checkbox-container input:checked ~ .checkmark {
  background-color: #2196F3;
}

.checkbox-container .checkmark::after {
  content: "";
  position: absolute;
  display: none;
}

.checkbox-container input:checked ~ .checkmark::after {
  display: block;
  left: 6px;
  top: 2px;
  width: 6px;
  height: 12px;
  border: solid white;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.product-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.product-item.card {
    width: 100%;
}

.user-nav .nav-link .fas,
.user-nav .nav-link .fab {
    color: #333;
    transition: color 0.2s ease;
}

.user-nav .nav-link:hover .fas,
.user-nav .nav-link:hover .fab {
    color: #FF9900;
}

[data-theme='dark'] .user-nav .nav-link .fas,
[data-theme='dark'] .user-nav .nav-link .fab {
    color: #f0f0f0;
}
[data-theme='dark'] .user-nav .nav-link:hover .fas,
[data-theme='dark'] .user-nav .nav-link:hover .fab {
    color: #FF9900;
}

.nav-link-icon {
    color: #000;
    position: relative;
    display: inline-block;
}

.notification-dot {
    position: absolute;
    top: 5px;
    right: 9px;
    width: 10px;
    height: 10px;
    background-color: #e74c3c;
    border-radius: 50%;
    border: 2px solid #ffffff;
}
.nav-link-icon.has-notifications {
        color: #007bff;
    }
[data-theme='dark'] .notification-dot {
    border-color: #1a1a2e;
}
.form-hint-warning {
    font-size: 0.85em;
    color: #e67e22; /* Оrange */
    margin-top: 8px;
    padding: 8px;
    background-color: rgba(230, 126, 34, 0.1);
    border-left: 3px solid #e67e22;
    border-radius: 4px;
}

.notifications-page {
    max-width: 900px;
    margin: 20px auto;
}

.notifications-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: 1rem;
    background-color: var(--card-bg-color);
    border-radius: 8px;
    margin-bottom: 25px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
}
.notifications-header h2 { margin: 0; }
.notification-stats { margin-top: 5px; color: var(--subtle-text-color); }
.notification-stats strong { color: var(--text-color); }
.notification-stats .stat-item { margin-right: 15px; }
.header-actions .btn-sm { margin-left: 10px; }

.notification-list {
    list-style: none;
    padding: 0;
}

.notification-item {
    display: flex;
    gap: 20px;
    background-color: var(--card-bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.2rem;
    margin-bottom: 1rem;
    transition: all 0.2s ease-in-out;
}

.notification-item.is-unread {
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    border-left: 4px solid var(--primary-color);
}

.notification-item.is-read {
    opacity: 0.8;
}
.notification-item.is-read:hover {
    opacity: 1;
}

.notification-icon .icon-bg {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2em;
}

.notification-body {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.notification-main-content {
    flex-grow: 1;
}

.notification-message {
    margin: 0 0 0.5rem 0;
    font-size: 1.05em;
    color: var(--text-color);
}
.notification-message .product-link {
    font-weight: 600;
    color: var(--text-color);
    text-decoration: none;
    border-bottom: 1px dotted var(--text-color);
}
.notification-message .product-link:hover {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.price-details {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.95em;
    margin: 0.5rem 0;
}
.price-details .price-old { color: var(--subtle-text-color); text-decoration: line-through; }
.price-details .price-new { color: var(--success-color); font-weight: 700; font-size: 1.1em; }

.price-diff-badge {
    background-color: rgba(46, 204, 113, 0.15);
    color: #27ae60;
    padding: 3px 8px;
    border-radius: 12px;
    font-size: 0.85em;
    font-weight: 600;
}

.notification-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1rem;
    border-top: 1px solid var(--border-color);
    padding-top: 0.75rem;
}
.notification-meta .timestamp {
    font-size: 0.85em;
    color: var(--subtle-text-color);
}
.notification-meta .actions { display: flex; gap: 15px; }
.action-link, .action-link-btn {
    font-size: 0.85em;
    text-decoration: none;
    color: var(--primary-color);
    font-weight: 600;
}
.action-link-btn {
    border: none;
    background: none;
    cursor: pointer;
    padding: 0;
}
.action-link:hover, .action-link-btn:hover {
    text-decoration: underline;
}

.no-notifications {
    text-align: center;
    padding: 50px 20px;
    background-color: var(--card-bg-color);
    border-radius: 8px;
}
.no-notifications i { font-size: 3em; color: var(--subtle-text-color); opacity: 0.5; }
.no-notifications h3 { margin: 20px 0 10px 0; }
.no-notifications p { margin-bottom: 25px; }

.product-item.highlighted-card {
    box-shadow: 0 0 0 3px var(--success-color), 0 5px 25px rgba(40, 167, 69, 0.3);
    transform: scale(1.01);
}
.select-multiple-checkboxes .form-check {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 6px;
}
.admin-notification {
    list-style: none;
    background: #FFFFFF;
    border: 1px solid rgba(0, 0, 0, 0.05);
    border-radius: var(--border-radius-lg, 12px);
    padding: 1.5rem;
    margin: 1.5rem 0;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    transition: transform 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
    animation: admin-fade-in 0.4s ease-out;
}

.admin-notification:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.08);
}

/* Тонкая синяя линия сверху как акцент */
.admin-notification::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--primary-color, #3B82F6); /* Используем ваш основной синий цвет */
}

.admin-notification .notification-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0;
    margin: 0;
    border: none;
}

.admin-notification .admin-icon {
    font-size: 1.5rem;
    color: var(--primary-color, #3B82F6); /* Основной синий цвет */
    opacity: 0.8; /* Слегка приглушаем */
}

.admin-notification .notification-header strong {
    font-family: var(--font-family-headings, 'Segoe UI', sans-serif);
    font-size: 1.1rem; /* Чуть меньше, чтобы не перегружать светлый фон */
    font-weight: 600;
    color: #1E293B; /* Тёмно-серый/почти чёрный для контраста */
    letter-spacing: 0.3px;
}

.admin-notification .notification-body {
    padding: 0;
    margin: 0;
}

.admin-notification .notification-body p {
    font-family: var(--font-family-body, 'Segoe UI', sans-serif);
    font-size: 1rem;
    line-height: 1.5;
    color: #4A5568; /* Тёмно-серый для основного текста */
    margin: 0;
    font-style: normal;
}

.admin-notification .notification-meta {
    padding-top: 1rem;
    margin-top: 0;
    border-top: 1px solid #E5E7EB; /* Светлый разделитель */
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
    color: #718096; /* Серый для мета-информации */
}

.admin-notification .notification-meta .timestamp {
    font-style: italic; /* Возвращаем курсив для временной метки, но делаем его более утончённым */
}

.admin-notification .notification-meta .action-link {
    font-weight: 500;
    color: var(--primary-color, #3B82F6);
    text-decoration: none;
    transition: color 0.2s ease-in-out;
    padding: 0.3rem 0.6rem;
    border-radius: var(--border-radius-sm, 6px);
    border: 1px solid var(--primary-color, #3B82F6);
    background-color: transparent;
    font-size: 0.85rem;
}

.admin-notification .notification-meta .action-link:hover {
    background-color: rgba(59, 130, 246, 0.1);
    color: var(--primary-color-dark, #2C64B3);
    text-decoration: none;
}

@keyframes admin-fade-in {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}
select.form-control {
  background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="10" height="5" viewBox="0 0 10 5"><path d="M0 0h10L5 5z" fill="grey"/></svg>') no-repeat right 10px center;
  padding-right: 20px;
}
.flash.wildberries {
  background-color: #F3E5F5;
  color: #6A1B9A;
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin: 3rem auto;
  padding: 2rem 0;
  max-width: 1200px;
  justify-items: center;
  align-items: stretch; /* Ensure cards are equal height */
}

.feature {
  background: var(--card-bg-color);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  padding: 2rem;
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: 360px; /* Slightly wider for balance */
  min-height: 100px; /* Ensure consistent height */
}

.feature:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .features {
    grid-template-columns: 1fr;
    padding: 1.5rem 1rem;
  }

  .feature {
    max-width: 100%;
    padding: 1.5rem;
  }
}

@media (max-width: 600px) {
  .feature-icon-wrapper {
    width: 60px;
    height: 60px;
  }

  .feature i {
    font-size: 2rem;
  }

  .feature h3 {
    font-size: 1.3rem;
  }

  .feature-description {
    font-size: 0.95rem;
  }
}

.feature-icon-wrapper {
  width: 90px; /* Larger for softer appearance */
  height: 90px;
  background: linear-gradient(145deg, rgba(var(--primary-color-rgb, 42, 127, 255), 0.1), rgba(var(--primary-color-dark-rgb, 26, 106, 218), 0.2));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  backdrop-filter: blur(8px); /* Glassmorphism effect */
  border: 1px solid rgba(255, 255, 255, 0.2); /* Subtle border for light theme */
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.05), 0 4px 12px rgba(0, 0, 0, 0.1);
}


html[data-theme='dark'] .feature h3 {
  color: var(--text-color);
}

html[data-theme='dark'] .feature-icon-wrapper {
  background: linear-gradient(145deg, rgba(var(--primary-color-rgb, 58, 142, 255), 0.15), rgba(var(--primary-color-dark-rgb, 42, 127, 255), 0.25));
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: inset 0 2px 4px rgba(255, 255, 255, 0.05), 0 4px 12px rgba(0, 0, 0, 0.2);
}

html[data-theme='dark'] .feature i {
  color: var(--primary-color);
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
}

/* Animation for icons */
.feature-icon-wrapper {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature:hover .feature-icon-wrapper {
  transform: scale(1.1); /* Gentle zoom on hover */
  box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.1), 0 6px 16px rgba(0, 0, 0, 0.15);
}

html[data-theme='dark'] .feature:hover .feature-icon-wrapper {
  box-shadow: inset 0 2px 6px rgba(255, 255, 255, 0.1), 0 6px 16px rgba(0, 0, 0, 0.25);
}
.feature i {
  font-size: 2rem;
  color: var(--primary-color);
  filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.1));
}

.feature h3 {
  font-size: 1.4rem;
  font-weight: 600; /* Reduced from 700 to 600 */
  color: var(--text-color-light); /* Less bright, using lighter text color */
  margin-bottom: 1rem;
  font-family: var(--font-family-headings);
}

.feature-description {
  font-size: 0.95rem;
  color: var(--text-color-light);
  line-height: 1.6;
  margin: 0;
  flex-grow: 1;
}
/* Beta Feedback Prompt and Button */
.beta-feedback-container {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 10px;
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px dashed var(--border-color);
    flex-wrap: wrap;
}

.beta-feedback-text {
    display: inline-block;
    font-size: 10px;
    color: var(--text-color-light);
    background-color: var(--card-bg-color);
    padding: 4px 8px;
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--border-color);
    line-height: 1.3;
    max-width: 300px;
    text-align: right;
}

.beta-feedback-btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-weight: 500;
    font-size: 0.90rem;
    text-decoration: none;
    padding: 8px 16px;
    border-radius: 50px;
    color: #fff;
    background-image: linear-gradient(to right, var(--primary-color), var(--primary-color-dark));
    box-shadow: 0 2px 8px rgba(var(--primary-color-rgb), 0.3);
    transition: all 0.3s ease;
}

.beta-feedback-btn:hover {
    transform: scale(1.03);
    box-shadow: 0 4px 12px rgba(var(--primary-color-rgb), 0.4);
    background-image: linear-gradient(to right, var(--primary-color-dark), var(--primary-color));
}

@media (max-width: 600px) {
    .beta-feedback-container {
        flex-direction: column;
        align-items: flex-end;
        gap: 8px;
    }
    .beta-feedback-text {
        max-width: 100%;
        font-size: 0.7rem;
    }
    .beta-feedback-btn {
        font-size: 0.7rem;
        padding: 6px 12px;
    }
}
.beta-feedback-btn {
    background-image: linear-gradient(
        to right,
        rgba(var(--primary-color-rgb), 0.15),
        rgba(var(--primary-color-dark-rgb), 0.15)
    );
    color: var(--primary-color);
    box-shadow: none;
    border: 1px solid rgba(var(--primary-color-rgb), 0.3);
}

.beta-feedback-btn:hover {
    background-image: linear-gradient(
        to right,
        rgba(var(--primary-color-rgb), 0.25),
        rgba(var(--primary-color-dark-rgb), 0.25)
    );
    color: var(--primary-color-dark);
    transform: none;
}
.beta-feedback-btn {
    background: transparent;
    color: var(--primary-color);
    box-shadow: none;
}

.beta-feedback-btn:hover {
    background: var(--primary-color);
    color: #fff;
}