/* ===== Theme Variables ===== */

:root {
    --bg-color: var(--color-bg);
    --text-color: var(--color-text);
    --surface-color: var(--color-surface);
    --surface-hover: var(--color-surface-hover);
    --border-color: var(--color-border);
    --accent-color: var(--color-accent);
    --accent-hover: var(--color-accent-hover);
    --muted-color: var(--color-muted);
    --input-bg: var(--color-input-bg);
    --input-border: var(--color-input-border);
    --input-focus: var(--color-input-focus);
    --error-color: var(--color-error);
    --error-bg: var(--color-error-bg);
    --success-color: var(--color-success);
    --success-bg: var(--color-success-bg);
    --danger-color: var(--color-danger);
    --danger-bg: var(--color-danger-bg);
    --shadow-color: var(--color-shadow);
    --menu-hover: var(--color-menu-hover);
}

/* Backward-compat aliases so existing JS/CSS refs don't break */
:root {
    --glass-bg: var(--surface-color);
    --glass-border: var(--border-color);
    --accent-blue: var(--accent-color);
    --accent-blue-hover: var(--accent-hover);
    --heading-gradient-from: var(--text-color);
    --heading-gradient-to: var(--muted-color);
}

:root,
[data-theme="light"] {
    --color-bg: #f5f5f7;
    --color-text: #1d1d1f;
    --color-surface: #ffffff;
    --color-surface-hover: #f9f9f9;
    --color-border: #e1e1e3;
    --color-accent: #0071e3;
    --color-accent-hover: #0066cc;
    --color-muted: #6e6e73;
    --color-input-bg: #ffffff;
    --color-input-border: #d2d2d7;
    --color-input-focus: #0071e3;
    --color-error: #e8372c;
    --color-error-bg: #fef2f1;
    --color-success: #1a8d48;
    --color-success-bg: #f0faf4;
    --color-danger: #e8372c;
    --color-danger-bg: #fef2f1;
    --color-shadow: rgba(0, 0, 0, 0.06);
    --color-menu-hover: rgba(0, 0, 0, 0.04);
}

[data-theme="dark"] {
    --color-bg: #0a0a0b;
    --color-text: #ededef;
    --color-surface: #161618;
    --color-surface-hover: #1c1c1f;
    --color-border: #27272a;
    --color-accent: #5ac8fa;
    --color-accent-hover: #42b8f0;
    --color-muted: #8b8b8e;
    --color-input-bg: #161618;
    --color-input-border: #303033;
    --color-input-focus: #5ac8fa;
    --color-error: #f87171;
    --color-error-bg: rgba(248, 113, 113, 0.1);
    --color-success: #4ade80;
    --color-success-bg: rgba(74, 222, 128, 0.1);
    --color-danger: #f87171;
    --color-danger-bg: rgba(248, 113, 113, 0.1);
    --color-shadow: rgba(0, 0, 0, 0.3);
    --color-menu-hover: rgba(255, 255, 255, 0.06);
}

[data-theme="sunrise"] {
    --color-bg: #fef7ee;
    --color-text: #2d1f1f;
    --color-surface: #ffffff;
    --color-surface-hover: #fef3e6;
    --color-border: #e8d5c0;
    --color-accent: #e85d20;
    --color-accent-hover: #d14f15;
    --color-muted: #8c6d5c;
    --color-input-bg: #ffffff;
    --color-input-border: #dbc5ad;
    --color-input-focus: #e85d20;
    --color-error: #dc2626;
    --color-error-bg: #fef2f2;
    --color-success: #16a34a;
    --color-success-bg: #f0fdf4;
    --color-danger: #dc2626;
    --color-danger-bg: #fef2f2;
    --color-shadow: rgba(120, 60, 20, 0.06);
    --color-menu-hover: rgba(232, 93, 32, 0.08);
}

[data-theme="purple"] {
    --color-bg: #110d1d;
    --color-text: #eae6f5;
    --color-surface: #1a1528;
    --color-surface-hover: #211b33;
    --color-border: #2e2645;
    --color-accent: #b98cff;
    --color-accent-hover: #a674f5;
    --color-muted: #8a80a0;
    --color-input-bg: #1a1528;
    --color-input-border: #382f52;
    --color-input-focus: #b98cff;
    --color-error: #f87171;
    --color-error-bg: rgba(248, 113, 113, 0.1);
    --color-success: #4ade80;
    --color-success-bg: rgba(74, 222, 128, 0.1);
    --color-danger: #f87171;
    --color-danger-bg: rgba(248, 113, 113, 0.1);
    --color-shadow: rgba(10, 5, 20, 0.3);
    --color-menu-hover: rgba(185, 140, 255, 0.1);
}

/* ===== Reset & Base ===== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

html {
    background-color: var(--bg-color);
}

html.no-transition,
html.no-transition *,
html.no-transition *::before,
html.no-transition *::after {
    transition: none !important;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
    transition: background-color 0.15s ease, color 0.15s ease;
}

/* ===== Header & Nav ===== */

.glass-header {
    position: fixed;
    top: 0;
    width: 100%;
    height: 56px;
    z-index: 1000;
    background: var(--surface-color);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: center;
}

nav {
    width: 100%;
    max-width: 1200px;
    padding: 0 18px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-weight: 600;
    font-size: 1.1rem;
    letter-spacing: -0.3px;
}

.logo a {
    color: inherit;
    text-decoration: none;
}

.nav-toggle {
    display: none;
    width: 36px;
    height: 36px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background: var(--surface-color);
    color: var(--text-color);
    cursor: pointer;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 4px;
}

.nav-toggle:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

.nav-toggle-bar {
    width: 16px;
    height: 2px;
    border-radius: 99px;
    background: currentColor;
}

.nav-links {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-links > li > a {
    padding: 6px 12px;
    border-radius: 6px;
    border: none;
    background: transparent;
    color: var(--muted-color);
    display: inline-block;
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    line-height: 1.2;
    transition: color 0.15s ease, background-color 0.15s ease;
}

.nav-links > li > a:hover {
    color: var(--text-color);
    background: var(--menu-hover);
}

/* ===== Theme Switcher ===== */

.theme-control {
    display: flex;
    align-items: center;
    position: relative;
}

.theme-gear {
    padding: 6px 12px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    background: var(--surface-color);
    color: var(--text-color);
    display: inline-block;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 500;
    line-height: 1.2;
    transition: background-color 0.15s ease, border-color 0.15s ease;
}

.theme-gear:hover {
    background: var(--menu-hover);
    border-color: var(--accent-color);
}

.theme-gear:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

/* ===== Account Dropdown ===== */

.account-control {
    display: flex;
    align-items: center;
    position: relative;
}

.account-gear {
    padding: 6px 12px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    background: var(--surface-color);
    color: var(--text-color);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 500;
    line-height: 1.2;
    transition: background-color 0.15s ease, border-color 0.15s ease;
}

.account-gear:hover {
    background: var(--menu-hover);
    border-color: var(--accent-color);
}

.account-gear:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

.account-gear svg {
    flex-shrink: 0;
}

.account-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 180px;
    padding: 4px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    background: var(--surface-color);
    box-shadow: 0 4px 16px var(--shadow-color);
    display: flex;
    flex-direction: column;
    gap: 2px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-6px);
    pointer-events: none;
    transition: opacity 0.15s ease, transform 0.15s ease, visibility 0.15s ease;
    z-index: 1200;
}

.account-dropdown.is-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
}

.account-dropdown__item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 10px;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-color);
    text-decoration: none;
    background: none;
    border: none;
    width: 100%;
    text-align: left;
    cursor: pointer;
    font-family: inherit;
    line-height: 1.2;
    transition: background-color 0.15s ease;
}

.account-dropdown__item:hover {
    background: var(--menu-hover);
}

.account-dropdown__item:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: -2px;
}

.account-dropdown__item svg {
    flex-shrink: 0;
}

.theme-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 280px;
    padding: 6px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    background: var(--surface-color);
    box-shadow: 0 4px 16px var(--shadow-color);
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 6px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-6px);
    pointer-events: none;
    transition: opacity 0.15s ease, transform 0.15s ease, visibility 0.15s ease;
    z-index: 1200;
}

.theme-dropdown.is-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
}

.theme-option {
    display: flex;
    flex-direction: column;
    width: 100%;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 10px;
    font-size: 0.82rem;
    font-weight: 500;
    background: var(--surface-hover);
    color: var(--text-color);
    cursor: pointer;
    text-align: left;
    position: relative;
    transition: border-color 0.15s ease, background-color 0.15s ease;
}

.theme-option:hover {
    border-color: var(--accent-color);
}

.theme-option:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 1px;
}

.theme-option.is-active {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 1px var(--accent-color);
}

.theme-option.is-active::after {
    content: '\2713';
    position: absolute;
    top: -8px;
    right: -8px;
    width: 18px;
    height: 18px;
    background: var(--accent-color);
    border-radius: 999px;
    color: #fff;
    font-size: 0.6rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.theme-option__header {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-bottom: 8px;
}

.theme-option__icon {
    width: 14px;
    height: 14px;
    display: inline-flex;
    flex-shrink: 0;
}

.theme-option__icon svg {
    width: 100%;
    height: 100%;
}

.theme-option__name {
    font-size: 0.75rem;
    font-weight: 600;
    line-height: 1;
}

.theme-option__swatches {
    display: flex;
    gap: 0;
}

.theme-swatch {
    width: 16px;
    height: 16px;
    border-radius: 999px;
    display: inline-block;
    border: 1px solid rgba(128, 128, 128, 0.25);
    margin-right: -4px;
}

/* Light swatches */
.swatch-light-bg     { background: #f5f5f7; }
.swatch-light-accent { background: #0071e3; }
.swatch-light-text   { background: #1d1d1f; }
.swatch-light-muted  { background: #6e6e73; }

/* Dark swatches */
.swatch-dark-bg     { background: #0a0a0b; }
.swatch-dark-accent { background: #5ac8fa; }
.swatch-dark-text   { background: #ededef; }
.swatch-dark-muted  { background: #8b8b8e; }

/* Sunrise swatches */
.swatch-sunrise-bg     { background: #fef7ee; }
.swatch-sunrise-accent { background: #e85d20; }
.swatch-sunrise-text   { background: #2d1f1f; }
.swatch-sunrise-muted  { background: #8c6d5c; }

/* Purple swatches */
.swatch-purple-bg     { background: #110d1d; }
.swatch-purple-accent { background: #b98cff; }
.swatch-purple-text   { background: #eae6f5; }
.swatch-purple-muted  { background: #8a80a0; }

/* ===== Card ===== */

.glass-card {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    padding: 32px 24px;
    border-radius: 12px;
    text-align: center;
    width: min(100%, 600px);
    box-shadow: 0 1px 3px var(--shadow-color);
}

/* ===== Buttons ===== */

.primary-btn,
.secondary-btn {
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.15s ease, border-color 0.15s ease;
    border: none;
    text-decoration: none;
}

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

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

.primary-btn:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

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

.secondary-btn:hover {
    background: var(--menu-hover);
    border-color: var(--accent-color);
}

.secondary-btn:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

/* ===== Footer ===== */

.glass-footer {
    padding: 24px 18px;
    background: var(--surface-color);
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.footer-content p {
    font-size: 0.78rem;
    color: var(--muted-color);
    margin-bottom: 0;
}

.footer-content a {
    color: var(--muted-color);
    text-decoration: none;
}

.footer-content a:hover {
    color: var(--accent-color);
    text-decoration: underline;
}

/* ===== Mobile Responsive ===== */

@media (max-width: 767px) {
    .nav-toggle {
        display: inline-flex;
    }

    .nav-links {
        position: absolute;
        top: calc(100% + 8px);
        right: 14px;
        left: 14px;
        width: auto;
        padding: 6px;
        border-radius: 10px;
        border: 1px solid var(--border-color);
        background: var(--surface-color);
        box-shadow: 0 4px 16px var(--shadow-color);
        flex-direction: column;
        align-items: stretch;
        gap: 2px;
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
        transform: translateY(-6px);
        transition: opacity 0.15s ease, transform 0.15s ease, visibility 0.15s ease;
    }

    .nav-links.is-open {
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
        transform: translateY(0);
    }

    .nav-links li {
        width: 100%;
    }

    .nav-links > li > a {
        display: block;
        width: 100%;
        padding: 10px 12px;
        border-radius: 8px;
        font-size: 0.9rem;
        color: var(--text-color);
    }

    .nav-links > li > a:hover {
        background: var(--menu-hover);
    }

    .theme-control {
        width: 100%;
        flex-direction: column;
        border-top: 1px solid var(--border-color);
        margin-top: 4px;
        padding-top: 8px;
    }

    .theme-gear {
        display: none;
    }

    .theme-dropdown {
        position: static;
        opacity: 1;
        visibility: inherit;
        pointer-events: inherit;
        transform: none;
        padding: 0;
        min-width: 0;
        width: 100%;
        border: 0;
        background: transparent;
        box-shadow: none;
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 6px;
    }

    .theme-option {
        padding: 8px;
    }

    .theme-option.is-active {
        border-color: var(--accent-color);
        box-shadow: 0 0 0 1px var(--accent-color);
    }

    .account-control {
        width: 100%;
        flex-direction: column;
        border-top: 1px solid var(--border-color);
        margin-top: 4px;
        padding-top: 8px;
    }

    .account-gear {
        display: none;
    }

    .account-dropdown {
        position: static;
        opacity: 1;
        visibility: inherit;
        pointer-events: inherit;
        transform: none;
        padding: 0;
        min-width: 0;
        width: 100%;
        border: 0;
        background: transparent;
        box-shadow: none;
        display: flex;
        flex-direction: column;
        gap: 2px;
    }

    .account-dropdown__item {
        padding: 10px 12px;
        border-radius: 8px;
        font-size: 0.9rem;
    }
}

@media (min-width: 768px) {
    nav {
        padding: 0 40px;
    }

    .logo {
        font-size: 1.25rem;
    }

    .nav-links {
        gap: 4px;
    }

    .nav-links > li > a {
        font-size: 0.9rem;
    }

    .theme-gear {
        font-size: 0.85rem;
        padding: 6px 10px;
    }

    .theme-dropdown {
        min-width: 280px;
    }

    .nav-toggle {
        display: none;
    }

    .glass-card {
        padding: 48px 40px;
    }
}

@media (min-width: 768px) {
    .account-gear {
        font-size: 0.85rem;
        padding: 6px 10px;
    }

    .account-dropdown {
        min-width: 180px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .theme-gear,
    .theme-dropdown,
    .theme-option,
    .account-gear,
    .account-dropdown,
    .account-dropdown__item,
    .primary-btn,
    .secondary-btn,
    body {
        transition: none;
    }
}