/* ===== Design System: frogswiper.cloud — 2025 ===== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

/* --- Tokens --- */
:root {
    /* Base palette — warm neutrals */
    --bg: #FAF9F7;
    --bg-secondary: #F0EEEB;
    --surface: rgba(255, 255, 255, 0.72);
    --surface-solid: #ffffff;

    /* Primary — digital lavender */
    --primary: #8B5CF6;
    --primary-hover: #7C3AED;
    --primary-light: rgba(139, 92, 246, 0.08);
    --primary-lighter: rgba(139, 92, 246, 0.14);
    --primary-glow: rgba(139, 92, 246, 0.25);

    /* Accent — teal mint */
    --accent: #2DD4BF;
    --accent-light: rgba(45, 212, 191, 0.1);

    /* Text */
    --text: #1A1A1C;
    --text-secondary: #6B6B6B;
    --text-muted: #9CA3AF;

    /* Borders */
    --border: rgba(0, 0, 0, 0.06);
    --border-light: rgba(0, 0, 0, 0.03);

    /* Semantic */
    --success: #10b981;
    --error: #ef4444;
    --warning: #f59e0b;

    /* Radius */
    --radius-sm: 10px;
    --radius: 14px;
    --radius-lg: 20px;
    --radius-xl: 28px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.03);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.06), 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 20px 48px rgba(0, 0, 0, 0.08), 0 8px 16px rgba(0, 0, 0, 0.04);

    /* Glass */
    --glass-bg: rgba(255, 255, 255, 0.72);
    --glass-border: rgba(255, 255, 255, 0.9);
    --glass-blur: blur(20px) saturate(180%);

    /* Typography */
    --font: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-spring: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* --- Dark Mode --- */
[data-theme="dark"] {
    --bg: #0C0C0D;
    --bg-secondary: #161618;
    --surface: rgba(255, 255, 255, 0.04);
    --surface-solid: #1A1A1C;

    --primary: #A78BFA;
    --primary-hover: #C4B5FD;
    --primary-light: rgba(167, 139, 250, 0.1);
    --primary-lighter: rgba(167, 139, 250, 0.16);
    --primary-glow: rgba(167, 139, 250, 0.3);

    --accent: #5EEAD4;
    --accent-light: rgba(94, 234, 212, 0.1);

    --text: #F5F3EF;
    --text-secondary: #A8A8A8;
    --text-muted: #6B6B6B;

    --border: rgba(255, 255, 255, 0.07);
    --border-light: rgba(255, 255, 255, 0.04);

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.25), 0 1px 2px rgba(0, 0, 0, 0.15);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.35);
    --shadow-lg: 0 20px 48px rgba(0, 0, 0, 0.45);

    --glass-bg: rgba(255, 255, 255, 0.04);
    --glass-border: rgba(255, 255, 255, 0.06);
    --glass-blur: blur(24px) saturate(180%);
}

[data-theme="dark"] .status.success { background: rgba(16, 185, 129, 0.12); }
[data-theme="dark"] .status.error { background: rgba(239, 68, 68, 0.12); }

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

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* --- Typography --- */
h1 {
    font-size: clamp(1.75rem, 4vw, 2.25rem);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.025em;
}

h2 {
    font-size: 1.35rem;
    font-weight: 700;
    line-height: 1.3;
    letter-spacing: -0.015em;
}

h3 {
    font-size: 1.05rem;
    font-weight: 700;
    line-height: 1.4;
    letter-spacing: -0.01em;
}

/* --- Layout --- */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* --- Cards (Glass) --- */
.card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    padding: 24px;
    transition:
        box-shadow var(--transition),
        transform var(--transition),
        border-color var(--transition);
    position: relative;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--glass-border), transparent);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    pointer-events: none;
}

.card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--primary-light);
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius);
    font-family: var(--font);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

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

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px var(--primary-glow);
}

.btn-primary:active {
    transform: translateY(0) scale(0.98);
}

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

.btn-secondary:hover {
    background: var(--primary-lighter);
    border-color: var(--primary-light);
}

.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

/* --- Inputs --- */
input, select, textarea {
    font-family: var(--font);
    font-size: 0.9rem;
    padding: 10px 14px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface-solid);
    color: var(--text);
    transition:
        border-color var(--transition),
        box-shadow var(--transition);
    width: 100%;
}

[data-theme="dark"] input,
[data-theme="dark"] select,
[data-theme="dark"] textarea {
    background: var(--bg-secondary);
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
}

label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
    letter-spacing: 0.01em;
}

/* --- Back link --- */
.back-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    transition: color var(--transition);
}

.back-link:hover {
    color: var(--primary);
}

/* --- Header --- */
.page-header {
    text-align: center;
    padding: 2.5rem 1rem 1.5rem;
}

.page-header h1 {
    color: var(--text);
    margin-bottom: 0.3rem;
}

.page-header p {
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 400;
}

.page-header .back-link {
    display: inline-block;
    margin-bottom: 1rem;
}

/* --- Footer --- */
.page-footer {
    text-align: center;
    padding: 2rem 1rem;
    color: var(--text-muted);
    font-size: 0.82rem;
    font-weight: 400;
    letter-spacing: 0.02em;
}

.page-footer a {
    color: var(--primary);
    text-decoration: none;
}

.page-footer a:hover {
    text-decoration: underline;
}

/* --- Dark Mode Toggle --- */
.dark-toggle {
    position: fixed;
    top: 18px;
    right: 18px;
    width: 40px;
    height: 40px;
    border: 1px solid var(--border);
    border-radius: 50%;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    cursor: pointer;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow);
    transition: all var(--transition);
    z-index: 50;
}

.dark-toggle:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-light);
}

/* --- Spinner --- */
.spinner {
    display: inline-block;
    width: 22px;
    height: 22px;
    border: 2.5px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading {
    text-align: center;
    padding: 3rem;
    color: var(--text-muted);
}

/* --- Status messages --- */
.status {
    text-align: center;
    padding: 12px 16px;
    border-radius: var(--radius);
    font-size: 0.88rem;
    font-weight: 500;
    display: none;
}

.status.show { display: block; }

.status.loading {
    background: var(--primary-light);
    color: var(--primary);
}

.status.success {
    background: rgba(16, 185, 129, 0.08);
    color: var(--success);
}

.status.error {
    background: rgba(239, 68, 68, 0.08);
    color: var(--error);
}

/* --- Tables --- */
table {
    width: 100%;
    border-collapse: collapse;
}

th {
    text-align: left;
    padding: 10px 12px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    border-bottom: 1.5px solid var(--border);
}

td {
    padding: 10px 12px;
    font-size: 0.9rem;
    border-bottom: 1px solid var(--border-light);
}

tr:hover {
    background: var(--primary-light);
}

/* --- Toast Notifications --- */
.toast-container {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 8px;
    pointer-events: none;
}

.toast {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    border-radius: var(--radius);
    font-size: 0.88rem;
    font-weight: 500;
    font-family: var(--font);
    background: var(--surface-solid);
    color: var(--text);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    opacity: 0;
    transform: translateY(-12px);
    transition: all 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
    pointer-events: auto;
}

[data-theme="dark"] .toast {
    background: var(--bg-secondary);
}

.toast-visible {
    opacity: 1;
    transform: translateY(0);
}

.toast-icon { font-size: 1.1rem; }
.toast-success .toast-icon { color: var(--success); }
.toast-error .toast-icon { color: var(--error); }
.toast-warning .toast-icon { color: var(--warning); }
.toast-info .toast-icon { color: var(--primary); }

/* --- Responsive --- */
@media (max-width: 768px) {
    h1 { font-size: 1.5rem; }
    h2 { font-size: 1.2rem; }
    .card { padding: 18px; }
}

@media (max-width: 480px) {
    h1 { font-size: 1.35rem; }
    .container { padding: 0 14px; }
}