/* auth.css - Современные стили авторизации */
/* Использует переменные из design-system.css */

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

body {
    font-family: var(--font-sans, 'Inter', -apple-system, BlinkMacSystemFont, sans-serif);
    background: var(--color-bg-primary, #04040a);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    position: relative;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(ellipse at top left, rgba(74, 144, 226, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at bottom right, rgba(139, 107, 255, 0.08) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

.auth-container {
    width: 100%;
    max-width: 440px;
    animation: slideInFromBottom 0.6s ease-out;
}

/* Ensure vertical centering on various viewports */
.auth-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - 40px);
}

.auth-card {
    background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
    backdrop-filter: blur(18px) saturate(120%);
    border-radius: var(--radius-xl, 24px);
    padding: 42px 36px;
    box-shadow: var(--shadow-xl, 0 20px 50px rgba(0,0,0,0.7)), 0 6px 18px rgba(58,167,162,0.04);
    border: 1px solid rgba(255,255,255,0.04);
    position: relative;
    overflow: hidden;
    transition: all var(--transition-base, 0.3s ease);
}

.auth-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-primary, linear-gradient(135deg, #3aa7a2, #6ee7b7));
}

.auth-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl, 0 20px 50px rgba(0,0,0,0.7)), 0 4px 20px rgba(74, 144, 226, 0.1);
}

.logo {
    text-align: center;
    margin-bottom: 24px;
}

.logo img {
    width: 64px;
    height: 64px;
    margin-bottom: 16px;
    filter: drop-shadow(0 4px 12px rgba(74, 144, 226, 0.3));
    transition: all var(--transition-smooth);
}

.logo img:hover {
    transform: rotate(15deg) scale(1.1);
}

/* unified logo helper */
.logo-img {
    width: 64px;
    height: 64px;
    object-fit: contain;
}

.logo-tag {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-top: 6px;
}

/* decorative warm floating candles */
.candles {
    position: absolute;
    inset: 0;
    pointer-events: none;
}
.candles .candle {
    position: absolute;
    width: 8px;
    height: 22px;
    background: linear-gradient(180deg, rgba(255,200,120,0.95), rgba(255,170,60,0.95));
    border-radius: 6px;
    box-shadow: 0 6px 18px rgba(255,160,60,0.08), 0 0 8px rgba(255,200,120,0.06) inset;
    transform-origin: bottom center;
    filter: blur(0.2px);
}
.candles .candle::after{
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    bottom: 100%;
    width: 6px;
    height: 18px;
    background: radial-gradient(closest-side, rgba(255,230,180,0.95), rgba(255,200,120,0.1));
    border-radius: 50%;
    opacity: 0.9;
    filter: blur(6px);
}
.candles .c1 { left: 8%; top: 12%; animation: floatC 6s ease-in-out infinite; }
.candles .c2 { right: 12%; top: 22%; animation: floatC 7s ease-in-out infinite; animation-delay: 0.8s; }
.candles .c3 { left: 46%; bottom: 12%; animation: floatC 8s ease-in-out infinite; animation-delay: 1.6s; }

@keyframes floatC {
    0% { transform: translateY(0) scaleY(1); opacity: 0.9; }
    50% { transform: translateY(-18px) scaleY(1.05); opacity: 1; }
    100% { transform: translateY(0) scaleY(1); opacity: 0.9; }
}

.logo h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 8px;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    letter-spacing: -0.02em;
}

.logo p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-top: 8px;
}

.form-group {
    margin-bottom: 24px;
    position: relative;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.form-control,
.form-group input {
    width: 100%;
    padding: 16px 20px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.04);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
    transition: all var(--transition-smooth);
    outline: none;
}

.form-control:focus,
.form-group input:focus {
    border-color: var(--accent-primary);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.1);
    transform: translateY(-1px);
}

.form-control::placeholder,
.form-group input::placeholder {
    color: var(--text-muted);
    opacity: 0.8;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 16px 24px;
    background: linear-gradient(90deg, rgba(110,231,183,0.95), rgba(139,107,255,0.95));
    border: none;
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: all var(--transition-smooth);
    position: relative;
    overflow: hidden;
    margin-bottom: 24px;
    text-decoration: none;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.6s;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.btn:hover::before {
    left: 100%;
}

.btn:active {
    transform: translateY(0);
}

.auth-links {
    text-align: center;
    margin-top: 24px;
}

.auth-links a {
    color: var(--accent-primary);
    text-decoration: none;
    font-weight: 500;
    transition: all var(--transition-smooth);
    position: relative;
    padding: 8px 0;
}

.auth-links a::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 50%;
    width: 0;
    height: 1px;
    background: var(--accent-primary);
    transition: all var(--transition-smooth);
    transform: translateX(-50%);
}

.auth-links a:hover {
    color: var(--accent-secondary);
}

.auth-links a:hover::after {
    width: 100%;
}

.error-message,
.alert-danger {
    background: rgba(255, 71, 87, 0.1);
    border: 1px solid rgba(255, 71, 87, 0.3);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    color: #FF6B7D;
    font-size: 0.9rem;
    margin-bottom: 20px;
    animation: slideInFromTop 0.3s ease-out;
}

.success-message,
.alert-success {
    background: rgba(0, 217, 255, 0.1);
    border: 1px solid rgba(0, 217, 255, 0.3);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    color: #00D9FF;
    font-size: 0.9rem;
    margin-bottom: 20px;
    animation: slideInFromTop 0.3s ease-out;
}

@keyframes slideInFromTop {
    0% {
        transform: translateY(-20px);
        opacity: 0;
    }
    100% {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes slideInFromBottom {
    0% {
        transform: translateY(30px);
        opacity: 0;
    }
    100% {
        transform: translateY(0);
        opacity: 1;
    }
}

@media (max-width: 768px) {
    body {
        padding: 16px;
    }
    
    .auth-card {
        padding: 32px 24px;
    }
    
    .logo h1 {
        font-size: 1.7rem;
    }
    
    .form-control,
    .form-group input {
        padding: 14px 16px;
        font-size: 0.95rem;
    }
    
    .btn {
        padding: 14px 20px;
        font-size: 0.95rem;
    }
}

@media (max-width: 480px) {
    .auth-container {
        max-width: 100%;
        padding: 0 8px;
    }
    
    .auth-card {
        padding: 28px 20px;
        border-radius: var(--radius-lg);
        margin: 0;
    }
    
    .logo h1 {
        font-size: 1.5rem;
        margin-bottom: 4px;
    }
    
    .logo img {
        width: 48px;
        height: 48px;
        margin-bottom: 12px;
    }
    
    .form-group {
        margin-bottom: 20px;
    }
    
    .form-group label {
        font-size: 0.85rem;
        margin-bottom: 6px;
    }
    
    .form-control,
    .form-group input {
        padding: 12px 14px;
        font-size: 0.9rem;
    }
    
    .btn {
        padding: 12px 18px;
        font-size: 0.9rem;
        margin-bottom: 20px;
    }
    
    .auth-links {
        margin-top: 20px;
    }
    
    .auth-links p {
        font-size: 0.85rem;
    }
}

@media (max-width: 360px) {
    .auth-card {
        padding: 24px 16px;
    }
    
    .logo h1 {
        font-size: 1.3rem;
    }
    
    .auth-form h2 {
        font-size: 1.2rem;
    }
}

.btn-secondary {
    background: rgba(255,255,255,0.03);
    color: var(--text-primary);
    border: 1px solid rgba(255,255,255,0.06);
}

.social-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: linear-gradient(90deg, rgba(74,144,226,0.12), rgba(139,107,255,0.08));
    border: 1px solid rgba(74,144,226,0.12);
    color: var(--text-primary);
}

.divider {
    text-align: center;
    color: var(--text-muted);
    margin: 12px 0;
    font-size: 0.9rem;
}

/* Preloader styles */
.preloader {
    position: fixed;
    inset: 0;
    display:flex;
    align-items:center;
    justify-content:center;
    background: linear-gradient(180deg, rgba(4,4,10,0.9), rgba(4,4,10,0.95));
    z-index: 99999;
    transition: opacity 0.45s ease, visibility 0.45s ease;
}
.preloader.loaded { opacity: 0; visibility: hidden; }
.preloader-inner { text-align:center; color:var(--text-primary); }
.preloader-inner img { width:72px; height:72px; margin-bottom:12px; filter:drop-shadow(0 8px 24px rgba(58,167,162,0.12)); }
.preloader .spinner { width:48px; height:48px; margin:0 auto 8px; border-radius:50%; border:4px solid rgba(255,255,255,0.06); border-top-color:var(--accent-primary); animation:spin 1s linear infinite; }
.preloader-text { color:var(--text-secondary); font-size:0.95rem; margin-top:6px; }

@keyframes spin { 0%{ transform:rotate(0deg);} 100%{ transform:rotate(360deg);} }