@font-face {
    font-family: 'Vazirmatn';
    src: url('../fonts/Vazirmatn-Regular.woff2') format('woff2');
    font-weight: normal;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Vazirmatn';
    src: url('../fonts/Vazirmatn-Bold.woff2') format('woff2');
    font-weight: bold;
    font-style: normal;
    font-display: swap;
}

:root {
    --kc-navy: #01203f;
    --kc-teal: #36ecdf;
    --kc-surface: #e9eaee;
    --kc-text: #2f2f2f;
    --kc-navy-muted: rgba(1, 32, 63, 0.75);
    --kc-teal-soft: rgba(54, 236, 223, 0.15);
}

html {
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: 'Vazirmatn', sans-serif;
    background-color: var(--kc-surface);
    color: var(--kc-text);
}

.kc-card {
    background-color: #fff;
    border-radius: 1rem;
    box-shadow: 0 4px 24px rgba(1, 32, 63, 0.08);
}

.kc-btn-primary {
    background-color: var(--kc-teal);
    color: var(--kc-navy);
    font-weight: 600;
    border-radius: 0.5rem;
    transition: filter 0.2s ease, transform 0.15s ease;
}

.kc-btn-primary:hover {
    filter: brightness(0.95);
}

.kc-btn-primary:active {
    transform: scale(0.98);
}

.kc-btn-secondary {
    background-color: var(--kc-navy);
    color: #fff;
    font-weight: 600;
    border-radius: 0.5rem;
    transition: background-color 0.2s ease;
}

.kc-btn-secondary:hover {
    background-color: var(--kc-navy-muted);
}

.kc-input {
    width: 100%;
    border: 1px solid #d1d5db;
    border-radius: 0.5rem;
    padding: 0.5rem 0.75rem;
    background-color: #fff;
    color: var(--kc-text);
}

.kc-input:focus {
    outline: none;
    border-color: var(--kc-teal);
    box-shadow: 0 0 0 3px var(--kc-teal-soft);
}

.kc-login-bg,
.kc-error-bg {
    background: linear-gradient(160deg, var(--kc-navy) 0%, #023a6b 45%, var(--kc-surface) 100%);
    min-height: 100vh;
    min-height: 100dvh;
}

.kc-error-card {
    background-color: #fff;
    border-radius: 1rem;
    box-shadow: 0 8px 40px rgba(1, 32, 63, 0.18);
    overflow: hidden;
}

.kc-error-header {
    background: linear-gradient(180deg, var(--kc-navy) 0%, #023a6b 100%);
    position: relative;
}

.kc-error-header::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 20% 30%, var(--kc-teal-soft) 0%, transparent 55%);
    pointer-events: none;
}

.kc-error-code {
    font-size: clamp(4rem, 18vw, 6.5rem);
    font-weight: 700;
    line-height: 1;
    color: var(--kc-teal);
    letter-spacing: -0.02em;
    text-shadow: 0 4px 24px rgba(54, 236, 223, 0.25);
    position: relative;
}

.nav-link-active {
    background-color: rgba(54, 236, 223, 0.12);
    border-right: 4px solid var(--kc-teal);
    color: var(--kc-teal);
}

@media (prefers-reduced-motion: reduce) {
    .kc-btn-primary,
    .kc-btn-secondary {
        transition: none;
    }
}