/* ==========================================================================
   UniTRS Authentication Design System (auth.css)
   Shared Dark Cyber-Glassmorphism Styles for all Auth Flows
   ========================================================================== */

:root {
    --dark-bg: #0d1b2a;
    --surface-bg: rgba(18, 30, 49, 0.85);
    --surface-card: rgba(255, 255, 255, 0.05);
    --surface-border: rgba(255, 255, 255, 0.12);
    --surface-hover: rgba(79, 172, 254, 0.12);
    --primary-blue: #4facfe;
    --primary-cyan: #00f2fe;
    --primary-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --accent-green: #10b981;
    --accent-amber: #f59e0b;
    --accent-red: #ef4444;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
}

* {
    box-sizing: border-box;
}

body.auth-page {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--dark-bg);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2.5rem 1rem;
    background-image: 
        radial-gradient(circle at 15% 20%, rgba(79, 172, 254, 0.18), transparent 35%),
        radial-gradient(circle at 85% 80%, rgba(0, 242, 254, 0.15), transparent 35%),
        radial-gradient(circle at 50% 50%, rgba(13, 27, 42, 0.6), transparent 70%);
    background-attachment: fixed;
}

.auth-container {
    max-width: 460px;
    width: 100%;
    margin: 0 auto;
}

.auth-card {
    background: var(--surface-bg);
    border: 1px solid var(--surface-border);
    border-radius: 24px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 2.5rem 2.25rem;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

@media (max-width: 576px) {
    .auth-card {
        padding: 2rem 1.5rem;
        border-radius: 20px;
    }
}

/* Header & Branding */
.auth-brand {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 0.5rem;
    text-decoration: none;
}

.auth-brand i {
    font-size: 2.2rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.auth-brand span {
    font-size: 1.75rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: #ffffff;
}

.auth-subtitle {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.92rem;
    margin-bottom: 1.75rem;
}

/* Step Badge */
.step-badge {
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    font-weight: 700;
    color: var(--primary-cyan);
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    background: rgba(0, 242, 254, 0.1);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    border: 1px solid rgba(0, 242, 254, 0.25);
    margin-bottom: 0.75rem;
}

/* Form Controls */
.form-label-dark {
    font-size: 0.86rem;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 0.45rem;
    display: block;
}

.input-group-dark {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--surface-border);
    border-radius: 14px;
    overflow: hidden;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
}

.input-group-dark:focus-within {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--primary-cyan);
    box-shadow: 0 0 0 3px rgba(0, 242, 254, 0.2);
}

.input-icon-dark {
    color: var(--text-muted);
    padding: 0 1rem;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.form-control-dark {
    background: transparent !important;
    border: none !important;
    color: #ffffff !important;
    padding: 0.85rem 1rem 0.85rem 0;
    font-size: 0.95rem;
    width: 100%;
    outline: none !important;
    box-shadow: none !important;
}

.form-control-dark::placeholder {
    color: rgba(255, 255, 255, 0.45) !important;
    opacity: 1 !important;
}

.form-control-dark:-webkit-autofill,
.form-control-dark:-webkit-autofill:hover, 
.form-control-dark:-webkit-autofill:focus {
    -webkit-text-fill-color: #ffffff !important;
    -webkit-box-shadow: 0 0 0px 1000px #132238 inset !important;
    box-shadow: 0 0 0px 1000px #132238 inset !important;
    transition: background-color 5000s ease-in-out 0s;
    caret-color: #ffffff !important;
}

.text-muted {
    color: #94a3b8 !important;
}

.text-secondary {
    color: #94a3b8 !important;
}

.btn-toggle-eye {
    background: transparent;
    border: none;
    color: var(--text-muted);
    padding: 0 1rem;
    cursor: pointer;
    font-size: 1.1rem;
    transition: color 0.15s ease;
}

.btn-toggle-eye:hover {
    color: #ffffff;
}

/* Primary Gradient Button */
.btn-auth-primary {
    background: var(--primary-gradient);
    border: none;
    color: #0d1b2a;
    font-weight: 700;
    font-size: 0.98rem;
    border-radius: 14px;
    padding: 0.85rem 1.5rem;
    box-shadow: 0 4px 20px rgba(0, 242, 254, 0.35);
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    width: 100%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    text-decoration: none;
}

.btn-auth-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 242, 254, 0.5);
    color: #0d1b2a;
}

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

/* Links & Text Utilities */
.auth-link {
    color: var(--primary-cyan);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.2s ease;
}

.auth-link:hover {
    color: #ffffff;
    text-shadow: 0 0 8px rgba(0, 242, 254, 0.6);
}

.auth-footer-text {
    font-size: 0.88rem;
    color: var(--text-muted);
    text-align: center;
    margin-top: 1.5rem;
}

.auth-divider {
    border-top: 1px solid var(--surface-border);
    margin: 1.5rem 0;
}

/* OTP Code Input */
.otp-input-dark {
    letter-spacing: 12px;
    font-size: 1.9rem;
    font-weight: 700;
    text-align: center;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    color: var(--primary-cyan) !important;
    background: rgba(255, 255, 255, 0.05) !important;
    border: 1px solid var(--surface-border) !important;
    border-radius: 14px !important;
    padding: 0.75rem 0.5rem 0.75rem 1.25rem !important;
    transition: all 0.2s ease !important;
    width: 100%;
}

.otp-input-dark:focus {
    background: rgba(255, 255, 255, 0.08) !important;
    border-color: var(--primary-cyan) !important;
    box-shadow: 0 0 0 3px rgba(0, 242, 254, 0.25) !important;
}

/* Informational Badge / Box */
.auth-info-box {
    background: rgba(79, 172, 254, 0.1);
    border: 1px solid rgba(79, 172, 254, 0.2);
    border-radius: 14px;
    padding: 0.85rem 1.15rem;
    margin-bottom: 1.5rem;
    font-size: 0.86rem;
    color: #cbd5e1;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.auth-info-box i {
    font-size: 1.35rem;
    color: var(--primary-cyan);
    flex-shrink: 0;
}