/* assets/css/auth.css */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --blur: 28px;
    --radius-card: 28px;
    --radius-input: 14px;
    --transition: 0.3s cubic-bezier(0.4,0,0.2,1);

    /* Light */
    --bg-l: #e8eaf0;
    --orb1-l: #a8c8ff;
    --orb2-l: #c4b5fd;
    --orb3-l: #99f6e4;
    --glass-bg-l: rgba(255,255,255,0.55);
    --glass-border-l: rgba(255,255,255,0.75);
    --glass-shadow-l: 0 8px 48px rgba(120,130,180,0.18), 0 2px 8px rgba(120,130,180,0.10);
    --input-bg-l: rgba(255,255,255,0.45);
    --input-border-l: rgba(200,210,240,0.6);
    --text-primary-l: #1a1d2e;
    --text-secondary-l: #5a6080;
    --accent-l: #3b6bff;
    --btn-from-l: #3b6bff;
    --btn-to-l: #7c3aed;

    /* Dark */
    --bg-d: #0e0f1a;
    --orb1-d: #1e3a8a;
    --orb2-d: #4c1d95;
    --orb3-d: #065f46;
    --glass-bg-d: rgba(255,255,255,0.06);
    --glass-border-d: rgba(255,255,255,0.12);
    --glass-shadow-d: 0 8px 48px rgba(0,0,0,0.45), 0 2px 8px rgba(0,0,0,0.25);
    --input-bg-d: rgba(255,255,255,0.07);
    --input-border-d: rgba(255,255,255,0.13);
    --text-primary-d: #f0f2ff;
    --text-secondary-d: #8890b0;
    --accent-d: #60a5fa;
    --btn-from-d: #3b6bff;
    --btn-to-d: #7c3aed;
}

[data-theme="light"] {
    --bg: var(--bg-l); --orb1: var(--orb1-l); --orb2: var(--orb2-l); --orb3: var(--orb3-l);
    --glass-bg: var(--glass-bg-l); --glass-border: var(--glass-border-l); --glass-shadow: var(--glass-shadow-l);
    --input-bg: var(--input-bg-l); --input-border: var(--input-border-l);
    --text-primary: var(--text-primary-l); --text-secondary: var(--text-secondary-l);
    --accent: var(--accent-l); --btn-from: var(--btn-from-l); --btn-to: var(--btn-to-l);
}
[data-theme="dark"] {
    --bg: var(--bg-d); --orb1: var(--orb1-d); --orb2: var(--orb2-d); --orb3: var(--orb3-d);
    --glass-bg: var(--glass-bg-d); --glass-border: var(--glass-border-d); --glass-shadow: var(--glass-shadow-d);
    --input-bg: var(--input-bg-d); --input-border: var(--input-border-d);
    --text-primary: var(--text-primary-d); --text-secondary: var(--text-secondary-d);
    --accent: var(--accent-d); --btn-from: var(--btn-from-d); --btn-to: var(--btn-to-d);
}

body {
    font-family: 'Nunito Sans', -apple-system, sans-serif;
    background: var(--bg);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    overflow: hidden;
    transition: background var(--transition);
}

/* Animated background orbs */
.bg-scene {
    position: fixed;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}
.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.6;
    animation: float 12s ease-in-out infinite;
}
.orb-1 { width: 500px; height: 500px; background: var(--orb1); top: -100px; left: -150px; animation-delay: 0s; }
.orb-2 { width: 400px; height: 400px; background: var(--orb2); bottom: -80px; right: -100px; animation-delay: -4s; }
.orb-3 { width: 300px; height: 300px; background: var(--orb3); top: 50%; left: 60%; animation-delay: -8s; }

@keyframes float {
    0%, 100% { transform: translate(0,0) scale(1); }
    33% { transform: translate(30px,-20px) scale(1.05); }
    66% { transform: translate(-20px,15px) scale(0.97); }
}

/* Theme toggle */
.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(var(--blur));
    -webkit-backdrop-filter: blur(var(--blur));
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    transition: all var(--transition);
    z-index: 100;
}
.theme-toggle:hover { transform: scale(1.1); }

/* Card */
.card {
    position: relative;
    width: 100%;
    max-width: 420px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-card);
    backdrop-filter: blur(var(--blur)) saturate(1.4);
    -webkit-backdrop-filter: blur(var(--blur)) saturate(1.4);
    box-shadow: var(--glass-shadow);
    padding: 40px 36px;
    animation: slideUp 0.6s cubic-bezier(0.16,1,0.3,1) both;
}
@keyframes slideUp {
    from { opacity: 0; transform: translateY(32px) scale(0.96); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}

.card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius-card);
    background: linear-gradient(135deg, rgba(255,255,255,0.15) 0%, transparent 60%);
    pointer-events: none;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 28px;
}
.logo-icon {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--btn-from), var(--btn-to));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    box-shadow: 0 4px 16px rgba(59,107,255,0.35);
}
.logo-text {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.3px;
}
.logo-text span { color: var(--accent); }

/* Tabs */
.tabs {
    display: flex;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 12px;
    padding: 4px;
    margin-bottom: 28px;
}
.tab {
    flex: 1;
    padding: 9px;
    text-align: center;
    border-radius: 9px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition);
}
.tab.active {
    background: var(--glass-bg);
    color: var(--text-primary);
    box-shadow: 0 2px 8px rgba(0,0,0,0.12);
    border: 1px solid var(--glass-border);
}

/* Form */
.form { display: flex; flex-direction: column; gap: 14px; }
.panel { display: none; }
.panel.active { display: block; }

.field { display: flex; flex-direction: column; gap: 6px; }
label {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.6px;
}
.input-wrap {
    position: relative;
}
.input-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 16px;
    opacity: 0.5;
    pointer-events: none;
}
input[type="text"], input[type="email"], input[type="password"] {
    width: 100%;
    padding: 12px 14px 12px 40px;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: var(--radius-input);
    font-family: inherit;
    font-size: 15px;
    color: var(--text-primary);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    outline: none;
    transition: all var(--transition);
}
input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(59,107,255,0.15);
    background: var(--glass-bg);
}
input::placeholder { color: var(--text-secondary); opacity: 0.6; }

.forgot {
    font-size: 12px;
    color: var(--accent);
    text-align: right;
    cursor: pointer;
    margin-top: -6px;
}

/* Button */
.btn-primary {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, var(--btn-from), var(--btn-to));
    border: none;
    border-radius: var(--radius-input);
    color: #fff;
    font-family: inherit;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: all var(--transition);
    box-shadow: 0 4px 20px rgba(59,107,255,0.35);
    margin-top: 6px;
}
.btn-primary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.2), transparent);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 8px 28px rgba(59,107,255,0.45); }
.btn-primary:active { transform: translateY(0); }

/* Divider */
.divider {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 4px 0;
    color: var(--text-secondary);
    font-size: 12px;
}
.divider::before, .divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--input-border);
}

/* Social buttons */
.social-row { display: flex; gap: 10px; }
.btn-social {
    flex: 1;
    padding: 11px;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: var(--radius-input);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    transition: all var(--transition);
}
.btn-social:hover { border-color: var(--accent); background: var(--glass-bg); }

.terms {
    font-size: 11px;
    color: var(--text-secondary);
    text-align: center;
    line-height: 1.5;
}
.terms a { color: var(--accent); text-decoration: none; }

/* Features strip */
.features {
    display: flex;
    gap: 8px;
    margin-top: 20px;
}
.feature-pill {
    flex: 1;
    padding: 8px 6px;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 10px;
    text-align: center;
    font-size: 11px;
    color: var(--text-secondary);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}
.feature-pill .fi { font-size: 16px; }
.feature-pill strong { color: var(--text-primary); font-size: 10px; display: block; }

/* Error Banner */
.error-banner {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #dc2626;
    padding: 12px 20px;
    border-radius: 12px;
    margin-bottom: 20px;
    font-size: 14px;
    animation: slideDown 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}
@keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 480px) {
    .card { padding: 28px 20px; }
    .features { display: none; }
}