/* --- Base & Variables --- */
:root {
    --color-primary: #6C63FF;
    --color-secondary: #FF6584;
    --font-family-headings: 'Poppins', sans-serif;
    --font-family-body: 'Roboto', sans-serif;
    --base-spacing: 1rem;
    --border-radius: 0.5rem;

    /* Light Mode */
    --bg-color: #F8F9FA;
    --surface-color: #FFFFFF;
    --text-color: #212529;
    --subtle-text-color: #6c757d;
    --border-color: #E0E0E0;

    --gradient: linear-gradient(45deg, var(--color-primary), var(--color-secondary));
}

[data-theme="dark"] {
    --bg-color: #121212;
    --surface-color: #1E1E1E;
    --text-color: #E0E0E0;
    --subtle-text-color: #adb5bd;
    --border-color: #333;
}

/* --- Reset & Base Styles --- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 calc(var(--base-spacing) * 1.5);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-headings);
    font-weight: 600;
    color: var(--text-color);
}

h1 { font-size: 3rem; line-height: 1.2; }
h2 { font-size: 2.25rem; margin-bottom: var(--base-spacing); }
h3 { font-size: 1.5rem; }

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.2s;
}
a:hover { color: var(--color-secondary); }

.page-header {
    text-align: center;
    padding: calc(var(--base-spacing) * 3) 0;
    background-color: var(--surface-color);
    border-bottom: 1px solid var(--border-color);
    margin-bottom: calc(var(--base-spacing) * 3);
}

.page-header h1 {
    font-size: 2.75rem;
}

.page-header p {
    font-size: 1.1rem;
    color: var(--subtle-text-color);
    max-width: 600px;
    margin: 0.5rem auto 0;
}

/* --- Header --- */
.header {
    background-color: var(--surface-color);
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    padding: var(--base-spacing) 0;
    position: sticky;
    top: 0;
    z-index: 100;
    transition: background-color 0.3s;
}
[data-theme="dark"] .header { box-shadow: 0 2px 4px rgba(0,0,0,0.2); }

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-family-headings);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
}
.logo:hover { color: var(--color-primary); }

.main-nav {
    display: flex;
    gap: calc(var(--base-spacing) * 1.5);
}
.main-nav a {
    font-weight: 500;
    color: var(--text-color);
}
.main-nav a.login-btn {
    background: var(--gradient);
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 600;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--base-spacing);
}

/* --- Language Switcher --- */
.language-switcher {
    position: relative;
    cursor: pointer;
}
.selected-lang {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    transition: background-color 0.2s;
}
.language-switcher:hover .selected-lang {
    background-color: var(--bg-color);
}
.selected-lang img {
    width: 20px;
    height: 15px;
    object-fit: cover;
    border-radius: 2px;
}
.selected-lang span {
    font-weight: 500;
}
.icon-sm {
    width: 16px;
    height: 16px;
    transition: transform 0.2s ease-in-out;
}
.language-switcher:hover .icon-sm {
    transform: rotate(180deg);
}
.lang-dropdown {
    display: block; /* Use opacity and visibility for animation */
    position: absolute;
    top: calc(100% + 0.5rem);
    right: 0;
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 0.5rem;
    box-shadow: 0 8px 24px rgba(0,0,0,0.1);
    min-width: 150px;
    z-index: 10;

    /* Animation */
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
}
.language-switcher:hover .lang-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.lang-dropdown a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.6rem 0.8rem;
    border-radius: calc(var(--border-radius) / 2);
    color: var(--text-color);
    font-weight: 500;
}
.lang-dropdown a:hover, .lang-dropdown a.active {
    background-color: var(--bg-color);
    color: var(--color-primary);
}
.lang-dropdown a.active {
    font-weight: 600;
}
.lang-dropdown a img {
    width: 20px;
    height: 15px;
    object-fit: cover;
    border-radius: 2px;
}

/* --- User Menu --- */
.user-menu {
    position: relative;
}
.user-menu-toggle {
    background: none;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.25rem;
    border-radius: 50px;
    transition: background-color 0.2s;
}
.user-menu:hover .user-menu-toggle {
    background-color: var(--bg-color);
}
.avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--border-color);
}
.user-menu .icon-sm {
    color: var(--text-color);
}
.user-dropdown {
    display: block;
    position: absolute;
    top: calc(100% + 0.5rem);
    right: 0;
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 0.5rem;
    box-shadow: 0 8px 24px rgba(0,0,0,0.1);
    min-width: 160px;
    z-index: 10;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
}
.user-menu:hover .user-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.user-dropdown a {
    display: block;
    padding: 0.6rem 1rem;
    color: var(--text-color);
    border-radius: calc(var(--border-radius) / 2);
}
.user-dropdown a:hover {
    background-color: var(--bg-color);
    color: var(--color-primary);
}

/* --- Theme Switch --- */
.theme-switch-wrapper { display: flex; align-items: center; }
.theme-switch { position: relative; display: inline-block; width: 50px; height: 26px; }
.theme-switch input { opacity: 0; width: 0; height: 0; }
.slider { position: absolute; cursor: pointer; top: 0; left: 0; right: 0; bottom: 0; background-color: #ccc; transition: .4s; }
.slider:before { position: absolute; content: ""; height: 20px; width: 20px; left: 3px; bottom: 3px; background-color: white; transition: .4s; }
input:checked + .slider { background-color: var(--color-primary); }
input:focus + .slider { box-shadow: 0 0 1px var(--color-primary); }
input:checked + .slider:before { transform: translateX(24px); }
.slider.round { border-radius: 34px; }
.slider.round:before { border-radius: 50%; }

/* --- Footer --- */
.footer {
    background-color: var(--surface-color);
    text-align: center;
    padding: calc(var(--base-spacing) * 2) 0;
    margin-top: calc(var(--base-spacing) * 3);
    border-top: 1px solid var(--border-color);
    color: var(--subtle-text-color);
    transition: background-color 0.3s, border-color 0.3s;
}

/* --- Buttons --- */
.btn {
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-family: var(--font-family-headings);
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all 0.2s;
    text-align: center;
}
.btn:hover { opacity: 0.9; transform: translateY(-2px); }

.btn-primary {
    background: var(--gradient);
    color: white;
}
.btn-primary:hover { color: white; }

.btn-secondary {
    background-color: var(--surface-color);
    color: var(--text-color);
    border: 1px solid var(--border-color);
}

.btn-outline-primary {
    background-color: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}
.btn-outline-primary:hover {
    background-color: var(--color-primary);
    color: white;
}

/* --- Cards --- */
.card {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: all 0.3s;
}
.card-body {
    padding: calc(var(--base-spacing) * 1.5);
}
.card-header {
    padding: var(--base-spacing) calc(var(--base-spacing) * 1.5);
    border-bottom: 1px solid var(--border-color);
    background-color: var(--bg-color);
}

/* --- Forms --- */
.form-group {
    margin-bottom: var(--base-spacing);
}
.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.5rem;
}
.form-control {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-family-body);
    font-size: 1rem;
    transition: border-color 0.2s, background-color 0.3s;
}
.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(108, 99, 255, 0.15);
}

/* --- Auth Pages (Login/Register) --- */
.auth-container {
    max-width: 450px;
    margin: calc(var(--base-spacing) * 3) auto;
}
.auth-container .card-header h2 {
    font-size: 1.75rem;
    text-align: center;
    margin: 0;
}
.auth-container .btn {
    width: 100%;
}
.auth-container .text-center {
    margin-top: var(--base-spacing);
    color: var(--subtle-text-color);
}

/* --- History Page --- */
.history-list {
    display: flex;
    flex-direction: column;
    gap: calc(var(--base-spacing) * 1.5);
}
.history-item .card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
    color: var(--subtle-text-color);
}
.history-item .card-body p {
    white-space: pre-wrap; /* Keep formatting */
}

/* --- Pricing Page --- */
.pricing-toggle {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: calc(var(--base-spacing) * 2.5);
    gap: var(--base-spacing);
}
.pricing-toggle span {
    font-weight: 500;
    color: var(--subtle-text-color);
}
.pricing-toggle .toggle-switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 26px;
}
.pricing-toggle .toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}
.pricing-toggle .toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-primary);
    transition: .4s;
    border-radius: 34px;
}
.pricing-toggle .toggle-slider:before {
    position: absolute;
    content: "";
    height: 20px;
    width: 20px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}
.pricing-toggle input:checked + .toggle-slider:before {
    transform: translateX(24px);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: calc(var(--base-spacing) * 2);
    align-items: stretch;
}

.pricing-card {
    display: flex;
    flex-direction: column;
    text-align: center;
    padding: calc(var(--base-spacing) * 2);
    border: 2px solid var(--border-color);
    transition: all 0.3s ease;
}

.pricing-card.popular {
    border-color: var(--color-primary);
    transform: scale(1.05);
    box-shadow: 0 10px 30px rgba(108, 99, 255, 0.15);
}

.pricing-card h3 {
    font-size: 1.5rem;
    color: var(--color-primary);
}

.pricing-card .price {
    font-size: 3rem;
    font-weight: 700;
    font-family: var(--font-family-headings);
    margin: var(--base-spacing) 0;
}
.pricing-card .price .period {
    font-size: 1rem;
    font-weight: 400;
    color: var(--subtle-text-color);
}

.pricing-card .features {
    list-style: none;
    padding: 0;
    margin: var(--base-spacing) 0;
    flex-grow: 1;
}
.pricing-card .features li {
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}
.pricing-card .features li svg {
    width: 20px;
    height: 20px;
    color: var(--color-primary);
}

.pricing-card .btn {
    width: 100%;
    margin-top: auto;
}

.annual-price {
    display: none;
}

/* --- FAQ Page --- */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
}
.accordion-item {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    margin-bottom: var(--base-spacing);
    border-radius: var(--border-radius);
}
.accordion-header {
    padding: 0;
    border: none;
}
.accordion-button {
    width: 100%;
    text-align: left;
    padding: var(--base-spacing) calc(var(--base-spacing) * 1.5);
    font-weight: 600;
    font-family: var(--font-family-headings);
    font-size: 1.1rem;
    background-color: var(--surface-color);
    color: var(--text-color);
    border: none;
    cursor: pointer;
    position: relative;
    border-radius: var(--border-radius);
}
.accordion-button:not(.collapsed) {
    color: var(--color-primary);
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
}
.accordion-button::after {
    content: '+';
    position: absolute;
    right: calc(var(--base-spacing) * 1.5);
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.5rem;
    font-weight: 300;
    transition: transform 0.2s ease-in-out;
}
.accordion-button:not(.collapsed)::after {
    content: '−';
    transform: translateY(-50%) rotate(45deg);
}
.accordion-collapse {
    display: none;
}
.accordion-collapse.show {
    display: block;
}
.accordion-body {
    padding: calc(var(--base-spacing) * 1.5);
    background-color: var(--bg-color);
    border-bottom-left-radius: var(--border-radius);
    border-bottom-right-radius: var(--border-radius);
}

/* --- Terms Page --- */
.terms-content {
    max-width: 800px;
    margin: 0 auto;
    background-color: var(--surface-color);
    padding: calc(var(--base-spacing) * 2);
    border-radius: var(--border-radius);
}
.terms-content h2 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--border-color);
}
.terms-content h3 {
    font-size: 1.25rem;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--color-primary);
}
.terms-content p, .terms-content ul, .terms-content ol {
    margin-bottom: 1rem;
    line-height: 1.7;
}
.terms-content ul, .terms-content ol {
    padding-left: 1.5rem;
}

/* --- Generator Form --- */
.generator-section {
    padding: calc(var(--base-spacing) * 3) 0;
    background-color: var(--surface-color);
}
.generator-form {
    background-color: var(--bg-color);
    padding: calc(var(--base-spacing) * 2);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: calc(var(--base-spacing) * 2);
    margin-bottom: calc(var(--base-spacing) * 2);
}
.form-column-wide {
    grid-column: 1 / -1;
}
.generator-form .form-group label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--subtle-text-color);
    text-transform: uppercase;
}
.generator-form input[type="text"],
.generator-form input[type="number"],
.generator-form textarea,
.generator-form select {
    width: 100%;
    padding: 0.8rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background-color: var(--surface-color);
    color: var(--text-color);
    font-family: var(--font-family-body);
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}
.generator-form input:focus,
.generator-form textarea:focus,
.generator-form select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(108, 99, 255, 0.2);
}
.generator-form select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%236c757d' class='bi bi-chevron-down' viewBox='0 0 16 16'%3E%3Cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 1em;
}
.form-submit-group {
    text-align: center;
    margin-top: calc(var(--base-spacing) * 2);
}
.cta-button {
    background: var(--gradient);
    color: white;
    padding: 1rem 2.5rem;
    border-radius: 50px;
    font-weight: 700;
    font-family: var(--font-family-headings);
    text-transform: uppercase;
    letter-spacing: 1px;
    border: none;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}
.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
    color: white;
}

/* --- Hero Section --- */
.hero {
    background: var(--gradient);
    padding: 6rem 0;
    text-align: center;
    margin-top: 2rem;
    border-radius: var(--border-radius);
}
.hero h1, .hero p {
    color: white;
}
.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
}
.hero p {
    font-size: 1.25rem;
    margin-top: 1rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}
.hero .cta-button {
    background: white;
    color: var(--color-primary);
}
.hero .cta-button:hover {
    background: var(--surface-color);
    color: var(--color-primary);
}

/* --- How It Works Section --- */
.how-it-works {
    padding: calc(var(--base-spacing) * 4) 0;
    background-color: var(--bg-color);
}

.how-it-works .section-header {
    text-align: center;
    margin-bottom: calc(var(--base-spacing) * 3);
}

.how-it-works .section-header h2 {
    font-size: 2.5rem;
}

.how-it-works .section-header p {
    font-size: 1.1rem;
    color: var(--subtle-text-color);
    max-width: 500px;
    margin: 0.5rem auto 0;
}

.steps-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: calc(var(--base-spacing) * 2.5);
}

.step-card {
    background-color: var(--surface-color);
    border-radius: var(--border-radius);
    padding: calc(var(--base-spacing) * 2);
    text-align: center;
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.step-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.08);
}

.step-icon-wrapper {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--gradient);
    margin-bottom: calc(var(--base-spacing) * 1.5);
    color: white;
}

.step-icon-wrapper svg {
    width: 36px;
    height: 36px;
}

.step-content h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.step-content p {
    color: var(--subtle-text-color);
}