/* ==========================================================================
   AttendIQ — Core Design System & Variables
   Institute: Chandpur Government Polytechnic Institute
   Team: Apex Dominion
   ========================================================================== */

:root {
    /* Brand Colors */
    --color-primary: #1AB87A;
    --color-primary-dark: #0FA36B;
    --color-bg-deep: #07120E;
    --color-bg-card: #0D1F17;
    --color-bg-surface: #122A1F;
    --color-gold: #D4A017;
    --color-violet: #8B5CF6;
    
    /* Text Colors */
    --color-text-main: #EAF7F0;
    --color-text-muted: #8EB5A2;
    
    /* Semantic Colors */
    --color-danger: #EF4444;
    --color-warning: #F59E0B;
    --color-success: #10B981;
    --color-border: #1A3828;
    
    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-mono: 'Fira Code', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    
    /* Glassmorphism */
    --glass-bg: rgba(18, 42, 31, 0.8);
    --glass-border: rgba(26, 184, 122, 0.15);
    
    /* Utilities */
    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 16px;
    --transition-fast: 0.2s ease;
}

body {
    background-color: var(--color-bg-deep);
    color: var(--color-text-main);
    font-family: var(--font-sans);
    line-height: 1.6;
    margin: 0;
    padding: 0;
    min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--color-text-main);
    margin-bottom: 1rem;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary-dark);
}

/* Base Cards */
.iq-card {
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    padding: 1.5rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
}

/* Glassmorphism Classes */
.iq-glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
}

/* Forms & Inputs */
.form-label {
    color: var(--color-text-muted);
    font-weight: 500;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.form-control {
    background-color: var(--color-bg-surface);
    border: 1px solid var(--color-border);
    color: var(--color-text-main);
    border-radius: var(--border-radius-sm);
    padding: 0.75rem 1rem;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
    background-color: var(--color-bg-surface);
    border-color: var(--color-primary);
    color: var(--color-text-main);
    box-shadow: 0 0 0 3px rgba(26, 184, 122, 0.2);
    outline: none;
}

.form-control::placeholder {
    color: #4A6E5C;
}

/* Buttons */
.btn-primary {
    background-color: var(--color-primary);
    color: #ffffff;
    border: none;
    border-radius: var(--border-radius-sm);
    padding: 0.6rem 1.5rem;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.btn-primary:hover, .btn-primary:focus {
    background-color: var(--color-primary-dark);
    color: #ffffff;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(26, 184, 122, 0.3);
}

.auth-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 2rem;
}

/* Add subtle animated background for Auth Pages */
.auth-bg-pattern {
    position: absolute;
    inset: 0;
    z-index: -1;
    background-image: radial-gradient(var(--color-bg-surface) 1px, transparent 1px);
    background-size: 40px 40px;
    opacity: 0.3;
}

/* Utility to ensure bootstrap inputs match the dark theme */
input:-webkit-autofill,
input:-webkit-autofill:hover, 
input:-webkit-autofill:focus, 
input:-webkit-autofill:active{
    -webkit-box-shadow: 0 0 0 30px var(--color-bg-surface) inset !important;
    -webkit-text-fill-color: var(--color-text-main) !important;
    transition: background-color 5000s ease-in-out 0s;
}

/* Badges */
.iq-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Role Specific Accents */
.accent-student { border-top: 3px solid var(--color-primary); }
.accent-teacher { border-top: 3px solid var(--color-gold); }
.accent-admin { border-top: 3px solid var(--color-violet); }

/* Logo Text */
.logo-text {
    font-weight: 700;
    font-size: 1.8rem;
    letter-spacing: -1px;
    background: linear-gradient(135deg, #EAF7F0, var(--color-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}