/* login.css - Premium Modern Design matching index.css */
@import url('https://fonts.googleapis.com/css2?family=Sarabun:wght@300;400;500;600;700;800&display=swap');

:root {
    --primary-color: #4f46e5;
    --primary-hover: #4338ca;
    --primary-light: rgba(79, 70, 229, 0.1);
    
    --bg-color: #f1f5f9;
    --text-main: #0f172a;
    --text-muted: #475569;
    --text-light: #94a3b8;
    
    --glass-bg: rgba(255, 255, 255, 0.75);
    --glass-border: rgba(255, 255, 255, 0.5);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.1);
    
    --shape-1: #c7d2fe;
    --shape-2: #ddd6fe;
    --shape-3: #e0e7ff;
}

/* Dark Mode Variables */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-color: #0f172a;       
        --text-main: #f8fafc;      
        --text-muted: #cbd5e1;     
        
        --glass-bg: rgba(30, 41, 59, 0.75);
        --glass-border: rgba(255, 255, 255, 0.1);
        --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
        
        --shape-1: #312e81; 
        --shape-2: #4c1d95; 
        --shape-3: #1e1b4b; 
    }
}

body.login-body {
    font-family: 'Sarabun', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow-x: hidden;
    overflow-y: auto;
    position: relative;
    margin: 0;
}

/* Animated Background */
.bg-shape {
    position: absolute;
    filter: blur(80px);
    border-radius: 50%;
    z-index: -1;
    animation: float 20s infinite alternate;
}
.shape-1 { width: 40vw; height: 40vw; background: var(--shape-1); top: -10%; left: -10%; animation-delay: 0s; }
.shape-2 { width: 35vw; height: 35vw; background: var(--shape-2); bottom: -10%; right: -10%; animation-delay: -5s; }
.shape-3 { width: 30vw; height: 30vw; background: var(--shape-3); top: 50%; left: 50%; transform: translate(-50%, -50%); animation-delay: -10s; }
@keyframes float {
    0% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(5%, 10%) scale(1.1); }
    100% { transform: translate(-5%, -5%) scale(0.9); }
}

.login-wrapper {
    width: 100%;
    max-width: 480px;
    padding: 2rem;
    z-index: 1;
}

.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 2rem;
    padding: 2.5rem;
    box-shadow: var(--glass-shadow);
    position: relative;
    overflow: hidden;
    animation: fadeInUp 0.6s ease-out forwards;
}

.card-header {
    text-align: center;
    margin-bottom: 2rem;
}

.logo-container {
    width: 90px;
    height: 90px;
    margin: 0 auto 1rem;
    background: #ffffff;
    border-radius: 50%;
    padding: 0.75rem;
    box-shadow: 0 10px 25px rgba(0,0,0,0.08);
    display: flex;
    justify-content: center;
    align-items: center;
    border: 3px solid var(--primary-light);
    animation: pulse 2s infinite;
}

.school-logo {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.card-header h2 {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--primary-color), #8b5cf6);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.card-header p {
    font-size: 0.95rem;
    color: var(--text-muted);
}

/* Tabs */
.login-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 2rem;
    background: rgba(0, 0, 0, 0.06); /* Darker recessed background */
    padding: 0.35rem;
    border-radius: 1rem;
    border: 1px solid rgba(0, 0, 0, 0.05); /* Subtle inner border */
}
@media (prefers-color-scheme: dark) {
    .login-tabs { background: rgba(0,0,0,0.3); border-color: rgba(255,255,255,0.1); }
}

.login-tab {
    flex: 1;
    padding: 0.75rem;
    border-radius: 0.75rem;
    border: none;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
}
.tab-active {
    background: #ffffff;
    color: var(--primary-color);
    box-shadow: 0 4px 12px rgba(0,0,0,0.08); /* Slightly stronger shadow */
    border: 1px solid rgba(0, 0, 0, 0.05); /* Border for better definition */
}
@media (prefers-color-scheme: dark) {
    .tab-active { background: var(--text-main); color: var(--bg-color); border: none; }
}

.tab-inactive {
    background: transparent;
    color: var(--text-muted);
}
.tab-inactive:hover {
    background: rgba(255,255,255,0.3);
}

/* Forms */
.form-group {
    margin-bottom: 1.25rem;
}
.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-main);
}
.form-control {
    width: 100%;
    padding: 0.85rem 1rem;
    border: 2px solid rgba(0, 0, 0, 0.15); /* More visible border */
    border-radius: 1rem;
    font-size: 1rem;
    background: rgba(255,255,255,0.6);
    color: var(--text-main);
    transition: all 0.3s ease;
    outline: none;
    font-family: inherit;
    box-sizing: border-box;
}
@media (prefers-color-scheme: dark) {
    .form-control { border-color: rgba(255, 255, 255, 0.25); background: rgba(0,0,0,0.2); }
}

.form-control:focus {
    background: #ffffff;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.15);
}
@media (prefers-color-scheme: dark) {
    .form-control:focus { background: rgba(0,0,0,0.4); }
}

.password-group {
    position: relative;
    display: flex;
    align-items: center;
}
.password-toggle {
    position: absolute;
    right: 1rem;
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0;
    display: flex;
    align-items: center;
    transition: color 0.3s;
}
.password-toggle:hover {
    color: var(--primary-color);
}

.forgot-password {
    text-align: right;
    margin-top: -0.5rem;
    margin-bottom: 1.5rem;
}
.forgot-password a {
    font-size: 0.85rem;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s;
}
.forgot-password a:hover {
    color: var(--primary-hover);
}

.btn-login {
    width: 100%;
    padding: 1rem;
    background: var(--primary-color);
    color: white;
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 1rem;
    font-size: 1.05rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 14px rgba(79, 70, 229, 0.3);
    font-family: inherit;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
}
@media (prefers-color-scheme: dark) {
    .btn-login { border-color: rgba(255, 255, 255, 0.2); }
}
.btn-login:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(79, 70, 229, 0.4);
}
.btn-login.guardian {
    background: #0ea5e9;
    box-shadow: 0 4px 14px rgba(14, 165, 233, 0.3);
}
.btn-login.guardian:hover {
    background: #0284c7;
    box-shadow: 0 6px 20px rgba(14, 165, 233, 0.4);
}

.back-link {
    margin-top: 2rem;
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid var(--glass-border);
}
.back-link a {
    text-decoration: none;
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: color 0.3s, transform 0.3s;
}
.back-link a:hover {
    color: var(--primary-color);
    transform: translateX(-3px);
}

/* Alerts */
.alert {
    padding: 1rem;
    border-radius: 1rem;
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    animation: fadeIn 0.4s ease;
}
.alert-error {
    background: rgba(254, 226, 226, 0.8);
    color: #991b1b;
    border: 1px solid #fca5a5;
}
.alert-success {
    background: rgba(209, 250, 229, 0.8);
    color: #065f46;
    border: 1px solid #6ee7b7;
}
@media (prefers-color-scheme: dark) {
    .alert-error { background: rgba(127, 29, 29, 0.4); border-color: rgba(220, 38, 38, 0.5); color: #fca5a5; }
    .alert-success { background: rgba(6, 78, 59, 0.4); border-color: rgba(5, 150, 105, 0.5); color: #6ee7b7; }
}

/* Animations */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(79, 70, 229, 0.3); }
    70% { box-shadow: 0 0 0 15px rgba(79, 70, 229, 0); }
    100% { box-shadow: 0 0 0 0 rgba(79, 70, 229, 0); }
}
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

@media screen and (max-width: 480px) {
    .login-wrapper { padding: 1rem; }
    .glass-card { padding: 1.5rem; border-radius: 1.5rem; }
    .card-header h2 { font-size: 1.25rem; }
}