/* GPTemail.me Main Stylesheet */

:root {
    /* Colors - Light Mode (Default) */
    --bg-color: #ffffff;
    --text-color: #000000;
    --text-secondary: #666666;
    --accent-color: #000000;
    /* Buttons, active states */
    --accent-hover: #333333;
    --border-color: #dddddd;
    --bg-secondary: #f9f9f9;
    --bg-tertiary: #f5f5f5;
    --header-bg: #ffffff;
    --card-bg: #ffffff;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --success-color: #1e7e34;
    --success-bg: #e6f4ea;
    --error-color: #dc3545;
    --info-bg: #e3f2fd;
    --info-text: #0d47a1;
    --input-bg: #ffffff;

    /* Fonts */
    --font-main: 'Rethink Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;

    /* Spacing */
    --container-width: 1000px;
    --radius-sm: 5px;
    --radius-md: 10px;
    --radius-lg: 15px;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg-color: #111111;
        --text-color: #ffffff;
        --text-secondary: #aaaaaa;
        --accent-color: #ffffff;
        --accent-hover: #cccccc;
        --border-color: #333333;
        --bg-secondary: #1a1a1a;
        --bg-tertiary: #222222;
        --header-bg: #111111;
        --card-bg: #1e1e1e;
        --shadow-color: rgba(0, 0, 0, 0.5);
        --success-color: #4caf50;
        --success-bg: rgba(76, 175, 80, 0.2);
        --error-color: #ff5252;
        --info-bg: rgba(33, 150, 243, 0.2);
        --info-text: #64b5f6;
        --input-bg: #222222;
    }
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 0;
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-main);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Typography */
h1,
h2,
h3,
h4,
nav a,
.cta-button,
.auth-button,
.price-amount,
.stat-number {
    font-weight: 800;
    color: var(--text-color);
}

p,
li,
.stat-label {
    font-weight: 400;
    color: var(--text-secondary);
}

/* Header & Nav */
header {
    padding: 20px;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--header-bg);
}

header h1 {
    margin: 0;
    font-size: 2.5em;
}

nav {
    margin-top: 10px;
}

nav a {
    margin: 0 15px;
    text-decoration: none;
    color: var(--text-color);
    position: relative;
    padding: 5px 0;
    transition: all 0.3s ease;
}

nav a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 50%;
    background-color: var(--accent-color);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

nav a:hover {
    opacity: 0.8;
}

nav a:hover::after {
    width: 100%;
}

nav a:active {
    transform: translateY(1px);
}

/* Sections Structure */
section {
    padding: 60px 20px;
    max-width: var(--container-width);
    margin: auto;
}

/* Hero Section */
.hero {
    text-align: center;
    padding-top: 100px;
}

.hero h2 {
    font-size: 2em;
    margin-bottom: 20px;
}

.hero p {
    font-size: 1.2em;
}

/* Buttons */
.cta-button,
.auth-button {
    display: inline-block;
    background-color: var(--accent-color);
    color: var(--bg-color);
    /* Inverted for high contrast */
    padding: 15px 30px;
    border: 2px solid var(--accent-color);
    border-radius: var(--radius-sm);
    font-size: 1em;
    cursor: pointer;
    margin-top: 20px;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
    text-decoration: none;
}

@media (prefers-color-scheme: dark) {

    .cta-button,
    .auth-button {
        color: #000;
    }
}

.cta-button:hover,
.auth-button:hover {
    background-color: var(--accent-hover);
    border-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px var(--shadow-color);
}

.cta-button:active,
.auth-button:active {
    transform: translateY(1px);
    box-shadow: 0 2px 5px var(--shadow-color);
}

/* Specific Buttons */
.login-button {
    background-color: transparent;
    color: var(--text-color);
    border: 2px solid var(--text-color);
}

.login-button:hover {
    background-color: rgba(128, 128, 128, 0.1);
    color: var(--text-color);
}

.signup-button {
    background-color: var(--accent-color);
    color: var(--bg-color);
}

@media (prefers-color-scheme: dark) {
    .signup-button {
        color: #000;
    }
}

/* Features, Pricing, Contact Headers */
.features,
.pricing,
.contact {
    margin-top: 40px;
}

.features h3,
.pricing h3,
.contact h3 {
    font-size: 1.8em;
    margin-bottom: 20px;
}

/* Feature List */
.feature-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
    max-width: 800px;
    margin: 0 auto;
}

.feature {
    width: 100%;
    padding: 30px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    text-align: left;
    background: var(--card-bg);
}

/* Flow Diagram */
.flow-diagram {
    max-width: 1000px;
    margin: 60px auto;
    padding: 20px;
    text-align: center;
    position: relative;
}

.services-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
    margin: 40px 0;
}

.service-box {
    flex: 1 1 200px;
    max-width: 250px;
    padding: 20px;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    position: relative;
    background: var(--card-bg);
    transition: transform 0.3s ease;
    color: var(--text-color);
}

.service-box:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px var(--shadow-color);
}

.service-box h4 {
    color: var(--text-color);
    /* Updated for dark mode */
    margin-bottom: 10px;
}

.service-email {
    font-family: monospace;
    color: var(--text-secondary);
    font-size: 0.9em;
    margin-bottom: 10px;
    padding: 5px;
    background: var(--bg-tertiary);
    border-radius: 4px;
}

.user-icon {
    font-size: 24px;
    margin-bottom: 10px;
    color: var(--text-color);
}

.arrow-container {
    display: flex;
    justify-content: center;
    margin: 20px 0;
}

.arrow {
    width: 0;
    height: 0;
    border-left: 15px solid transparent;
    border-right: 15px solid transparent;
    border-top: 15px solid var(--text-color);
}

.return-flow {
    margin-top: 40px;
    padding: 20px;
    background: var(--bg-secondary);
    border-radius: 10px;
    box-shadow: 0 2px 10px var(--shadow-color);
}

.return-arrow {
    width: 0;
    height: 0;
    border-left: 15px solid transparent;
    border-right: 15px solid transparent;
    border-top: 15px solid var(--text-color);
    margin: 20px auto;
}

.inbox-preview {
    max-width: 500px;
    margin: 0 auto;
    padding: 15px;
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    text-align: left;
}

.inbox-preview h4 {
    margin: 0 0 10px 0;
    color: var(--text-color);
}

.inbox-preview p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 0.9em;
}

/* Pricing Section */
.pricing {
    padding: 80px 20px;
    text-align: center;
    background-color: var(--bg-secondary);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--card-bg);
    border-radius: 10px;
    box-shadow: 0 5px 15px var(--shadow-color);
    padding: 30px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.pricing-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px var(--shadow-color);
}

.pricing-card.featured {
    border: 2px solid var(--info-text);
    transform: scale(1.05);
}

.pricing-card.featured:hover {
    transform: scale(1.05) translateY(-5px);
}

.best-value {
    position: absolute;
    top: 12px;
    right: -35px;
    background: var(--info-text);
    color: white;
    padding: 5px 40px;
    font-size: 0.7em;
    font-weight: 800;
    transform: rotate(45deg);
}

.pricing-header {
    margin-bottom: 25px;
}

.pricing-header h3 {
    font-weight: 800;
    margin-bottom: 15px;
    font-size: 1.5em;
}

.price {
    font-size: 2.5em;
    font-weight: 800;
    color: var(--info-text);
    margin-bottom: 10px;
}

.price-period {
    font-size: 0.4em;
    font-weight: 400;
    color: var(--text-secondary);
}

.pricing-features {
    margin-bottom: 30px;
}

.pricing-features p {
    margin: 10px 0;
    color: var(--text-color);
}

/* Auth Buttons Group */
.auth-buttons {
    margin-left: 20px;
    display: inline-flex;
    gap: 10px;
}

/* Dashboard & Account Specifics */
.dashboard {
    display: none;
    /* Toggled via JS */
    padding: 40px;
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 20px var(--shadow-color);
    margin: 40px auto;
    max-width: var(--container-width);
    border: 1px solid var(--border-color);
}

.dashboard.show {
    display: block;
}

.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

/* Stats */
.usage-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin: 30px 0;
}

.stat-box {
    background: var(--bg-secondary);
    padding: 20px;
    border-radius: var(--radius-md);
    text-align: center;
    border: 1px solid var(--border-color);
}

/* Purchase Options */
.purchase-options {
    margin-top: 40px;
    padding: 30px;
    background: var(--bg-secondary);
    border-radius: 15px;
    border: 1px solid var(--border-color);
}

.purchase-options h3,
.purchase-options h4 {
    text-align: center;
    margin-bottom: 30px;
    font-size: 1.5em;
    font-weight: 800;
}

.plans-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.plan-box {
    background: var(--card-bg);
    padding: 25px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 2px 10px var(--shadow-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid var(--border-color);
}

.plan-box:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px var(--shadow-color);
}

.plan-name {
    font-weight: 800;
    font-size: 1.2em;
    margin-bottom: 10px;
    color: var(--text-color);
}

.plan-price {
    font-size: 2em;
    font-weight: 800;
    color: var(--text-color);
    margin: 15px 0;
}

.plan-details {
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.plan-box .cta-button {
    width: 100%;
    margin-top: 10px;
}

.subscription-badge {
    background: var(--info-bg);
    color: var(--info-text);
    padding: 5px 10px;
    border-radius: 15px;
    font-size: 0.8em;
    font-weight: 600;
    display: inline-block;
    margin-top: 5px;
}

.plan-box.subscription {
    border: 2px solid var(--info-text);
    position: relative;
    overflow: hidden;
}

.plan-box.subscription::before {
    content: 'BEST VALUE';
    position: absolute;
    top: 10px;
    right: -30px;
    background: var(--info-text);
    color: white;
    padding: 5px 40px;
    font-size: 0.7em;
    font-weight: 800;
    transform: rotate(45deg);
}

/* Usage History */
.usage-history {
    margin-top: 40px;
}

.usage-history h3 {
    margin-bottom: 20px;
    font-size: 1.5em;
    font-weight: 800;
}

.history-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
    background: var(--card-bg);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 2px 10px var(--shadow-color);
}

.history-table th,
.history-table td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-color);
}

.history-table th {
    background: var(--bg-tertiary);
    font-weight: 800;
}

.history-table tr:last-child td {
    border-bottom: none;
}

.history-table tbody tr:hover {
    background: var(--bg-secondary);
}

.status-badge {
    padding: 5px 10px;
    border-radius: 15px;
    font-size: 0.9em;
    font-weight: 500;
}

.status-success {
    background: var(--success-bg);
    color: var(--success-color);
}

.status-pending {
    background: #fff3e0;
    color: #e65100;
}

.status-completed {
    background: var(--success-bg);
    color: var(--success-color);
}

.status-processing {
    background: #e3f2fd;
    color: #0d47a1;
}

/* Stripe Elements */
.stripe-form {
    max-width: 500px;
    margin: 20px auto;
    padding: 30px;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    background: var(--card-bg);
    box-shadow: 0 4px 12px var(--shadow-color);
}

.stripe-form h4 {
    text-align: center;
    margin-bottom: 20px;
    font-size: 1.4em;
}

.payment-summary {
    background: var(--bg-secondary);
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 20px;
    color: var(--text-color);
}

.payment-summary .item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
}

.payment-summary .total {
    font-weight: 800;
    border-top: 1px solid var(--border-color);
    padding-top: 10px;
    margin-top: 10px;
}

#card-element {
    padding: 15px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    margin: 20px 0;
    background: var(--input-bg);
}

#card-errors {
    color: var(--error-color);
    margin-top: 10px;
    font-size: 0.9em;
}

.payment-processing,
.payment-success {
    display: none;
    text-align: center;
    margin: 20px 0;
    padding: 15px;
    border-radius: 5px;
}

.payment-success {
    background: var(--success-bg);
    color: var(--success-color);
}

.payment-cancel {
    text-align: center;
    margin-top: 15px;
}

.payment-cancel a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9em;
}

.payment-cancel a:hover {
    text-decoration: underline;
}

/* Legal Pages Styles */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    margin: 20px 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.muted {
    color: var(--text-secondary);
    font-size: 0.9em;
}

main.legal-content {
    max-width: 1000px;
    margin: 40px auto;
    padding: 0 20px 60px;
}

main.legal-content h2 {
    margin-top: 32px;
    font-weight: 800;
}

main.legal-content ul,
main.legal-content ol {
    padding-left: 20px;
}

main.legal-content table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 12px;
}

main.legal-content th,
main.legal-content td {
    border: 1px solid var(--border-color);
    padding: 10px;
    text-align: left;
    color: var(--text-color);
}

main.legal-content th {
    background: var(--bg-tertiary);
    font-weight: 800;
}

.unlimited-text {
    font-size: 2.5em;
    font-weight: 800;
    color: var(--info-text);
}

/* Footer & Subscribe */
footer {
    text-align: center;
    padding: 20px;
    border-top: 1px solid var(--border-color);
    margin-top: 40px;
    background: var(--bg-secondary);
}

.subscribe-form {
    margin-top: 20px;
    text-align: center;
}

.subscribe-form input[type="email"] {
    padding: 10px;
    width: 70%;
    max-width: 300px;
    border: 1px solid var(--border-color);
    border-radius: 5px 0 0 5px;
    font-size: 1em;
    background: var(--input-bg);
    color: var(--text-color);
}

.subscribe-form button {
    padding: 10px 20px;
    border: none;
    background-color: var(--accent-color);
    color: var(--bg-color);
    font-size: 1em;
    cursor: pointer;
    border-radius: 0 5px 5px 0;
    transition: background-color 0.3s ease;
}

@media (prefers-color-scheme: dark) {
    .subscribe-form button {
        color: #000;
    }
}

.subscribe-form button:hover {
    background-color: var(--accent-hover);
}

/* Auth Modal (again to be sure) */
.auth-modal {
    display: flex;
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(6px);
    z-index: 1000;
    justify-content: center;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 160ms ease, visibility 0s linear 160ms;
}

.auth-modal.show {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transition: opacity 160ms ease;
}

.modal-content {
    background: var(--card-bg);
    padding: 32px 28px;
    border-radius: var(--radius-lg);
    width: min(92vw, 420px);
    position: relative;
    border: 1px solid var(--border-color);
    box-shadow: 0 20px 60px var(--shadow-color);
    transform: translateY(10px) scale(0.98);
    opacity: 0;
    transition: transform 180ms ease, opacity 180ms ease;
}

.auth-modal.show .modal-content {
    transform: translateY(0) scale(1);
    opacity: 1;
}

.modal-content h2 {
    margin: 0 0 8px;
    font-size: 1.6em;
}

.close-modal {
    position: absolute;
    top: 10px;
    right: 10px;
    height: 36px;
    width: 36px;
    display: grid;
    place-items: center;
    background: transparent;
    border: 1px solid transparent;
    border-radius: 999px;
    color: var(--text-secondary);
    font-size: 22px;
    cursor: pointer;
    transition: background-color 120ms ease, color 120ms ease, border-color 120ms ease;
}

.close-modal:hover {
    background: var(--bg-secondary);
    color: var(--text-color);
    border-color: var(--border-color);
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin-top: 16px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-size: 0.9em;
    font-weight: 600;
    color: var(--text-secondary);
}

.form-group input {
    padding: 12px 14px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--input-bg);
    color: var(--text-color);
    font-size: 1em;
    transition: border-color 120ms ease, box-shadow 120ms ease, background-color 120ms ease;
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.12);
}

@media (prefers-color-scheme: dark) {
    .form-group input:focus {
        box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.18);
    }
}

.error-message {
    min-height: 18px;
    color: var(--error-color);
    font-size: 0.9em;
    font-weight: 600;
}

.oauth-section {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.oauth-button {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    background: var(--bg-secondary);
    color: var(--text-color);
    font-weight: 700;
    cursor: pointer;
    transition: background-color 120ms ease, border-color 120ms ease, transform 120ms ease;
}

.oauth-button:hover {
    background: var(--bg-tertiary);
    border-color: var(--accent-color);
    transform: translateY(-1px);
}

.oauth-button.google {
    background: #fff;
    color: #000;
    border-color: #dadce0;
}

.oauth-button.google:hover {
    background: #f8f9fa;
    border-color: #c9cdd1;
}

.oauth-button .provider-icon {
    width: 18px;
    height: 18px;
    display: block;
}

.oauth-button.is-loading {
    opacity: 0.7;
    pointer-events: none;
}

.auth-divider {
    position: relative;
    text-align: center;
    font-size: 0.85em;
    color: var(--text-secondary);
}

.auth-divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--border-color);
}

.auth-divider span {
    position: relative;
    padding: 0 10px;
    background: var(--card-bg);
}

.modal-content .cta-button {
    width: 100%;
    margin-top: 2px;
}

/* Skip Link for Accessibility */
.skip-link {
    position: absolute;
    top: -100px;
    left: 0;
    background: black;
    color: white;
    padding: 10px 20px;
    z-index: 10000;
    transition: top 0.3s;
    text-decoration: none;
}

.skip-link:focus {
    top: 0;
}

/* Footer Layout */
.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 30px;
}

.footer-column {
    flex: 1;
    min-width: 150px;
}

.footer-column.wide {
    min-width: 200px;
}

.footer-column h4 {
    font-weight: 800;
    margin-bottom: 15px;
}

.footer-column p {
    color: var(--text-secondary);
    font-size: 0.9em;
    line-height: 1.6;
}

.footer-column p.contact-item {
    margin-bottom: 8px;
}

.footer-column nav {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-column nav a,
.footer-column a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9em;
}

.footer-column nav a:hover,
.footer-column a:hover {
    color: var(--text-color);
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding: 20px;
    text-align: center;
}

.footer-bottom p {
    color: var(--text-secondary);
    font-size: 0.85em;
    margin: 0;
}

.inbox-hint {
    margin-top: 10px;
    color: #888;
}