/* ============================================================
   CAMPUSKATHA — Landing & Registration Styles
   ============================================================ */

/* ====== LANDING PAGE ====== */

.ck-landing {
    min-height: 100vh;
    background: var(--color-surface);
}

/* Hero */
.ck-hero {
    position: relative;
    padding: 80px var(--space-outer-margin) 60px;
    text-align: center;
    overflow: hidden;
    background:
        linear-gradient(160deg, #f5f3ef 0%, #e8f5e9 30%, #f0eee9 70%);
    border-bottom: 1px solid var(--color-rule-line);
}

.ck-hero-inner {
    max-width: 680px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.ck-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 16px;
    background: var(--color-accent-container);
    color: var(--color-secondary);
    font-family: var(--font-ui);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    border-radius: 20px;
    margin-bottom: 24px;
}

.ck-hero-title {
    font-family: var(--font-masthead);
    font-size: clamp(48px, 8vw, 80px);
    font-weight: 400;
    letter-spacing: -0.02em;
    line-height: 1;
    color: var(--color-ink-primary);
    margin-bottom: 16px;
}

.ck-hero-accent {
    color: var(--color-accent);
    font-style: italic;
}

.ck-hero-subtitle {
    font-family: var(--font-headline);
    font-size: clamp(18px, 3vw, 24px);
    font-weight: 400;
    color: var(--color-ink-secondary);
    margin-bottom: 12px;
    line-height: 1.4;
}

.ck-hero-desc {
    font-family: var(--font-body);
    font-size: 15px;
    color: var(--color-on-surface-variant);
    line-height: 1.7;
    max-width: 540px;
    margin: 0 auto 32px;
}

.ck-hero-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}

.ck-hero-decoration {
    position: absolute;
    top: -100px;
    right: -100px;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(61,125,85,0.08) 0%, transparent 70%);
    pointer-events: none;
}

/* ====== BUTTONS ====== */

.ck-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 0 24px;
    min-height: 44px;
    font-family: var(--font-ui);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.03em;
    border-radius: 8px;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 1px solid transparent;
}

.ck-btn-primary {
    background: var(--color-accent);
    color: #fff;
    border-color: var(--color-accent);
}

.ck-btn-primary:hover {
    background: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(61,125,85,0.2);
}

.ck-btn-ghost {
    background: transparent;
    color: var(--color-ink-primary);
    border-color: var(--color-rule-line);
}

.ck-btn-ghost:hover {
    background: var(--color-surface-container);
    border-color: var(--color-outline-variant);
}

.ck-btn-full {
    width: 100%;
    justify-content: center;
}

/* ====== FEATURES ====== */

.ck-features {
    padding: 64px var(--space-outer-margin);
    max-width: 1000px;
    margin: 0 auto;
}

.ck-features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.ck-feature-card {
    padding: 28px 24px;
    border: 1px solid var(--glass-border, rgba(255,255,255,0.45));
    border-radius: 16px;
    background: var(--glass-bg, rgba(255,255,255,0.55));
    backdrop-filter: var(--glass-blur, blur(18px));
    -webkit-backdrop-filter: var(--glass-blur, blur(18px));
    box-shadow: var(--glass-shadow, 0 8px 32px rgba(0,0,0,0.06)), var(--glass-inset, inset 0 1px 0 rgba(255,255,255,0.6));
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.ck-feature-card:hover {
    box-shadow: var(--glass-shadow-hover, 0 12px 40px rgba(0,0,0,0.1));
    transform: translateY(-4px);
}

.ck-feature-icon {
    font-size: 28px;
    color: var(--color-accent);
    margin-bottom: 14px;
    display: block;
    font-variation-settings: 'FILL' 0;
}

.ck-feature-card h3 {
    font-family: var(--font-headline);
    font-size: 17px;
    font-weight: 600;
    color: var(--color-ink-primary);
    margin-bottom: 8px;
}

.ck-feature-card p {
    font-family: var(--font-body);
    font-size: 13px;
    line-height: 1.6;
    color: var(--color-on-surface-variant);
}

/* ====== DIRECTORY ====== */

.ck-directory {
    padding: 48px var(--space-outer-margin) 64px;
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.ck-directory-title {
    font-family: var(--font-headline);
    font-size: 28px;
    font-weight: 600;
    color: var(--color-ink-primary);
    margin-bottom: 4px;
}

.ck-directory-subtitle {
    font-family: var(--font-body);
    font-size: 14px;
    color: var(--color-on-surface-variant);
    margin-bottom: 32px;
}

.ck-directory-grid {
    display: grid;
    gap: 12px;
}

.ck-institute-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    border: 1px solid var(--glass-border, rgba(255,255,255,0.45));
    border-radius: 14px;
    background: var(--glass-bg, rgba(255,255,255,0.55));
    backdrop-filter: var(--glass-blur, blur(18px));
    -webkit-backdrop-filter: var(--glass-blur, blur(18px));
    box-shadow: var(--glass-shadow, 0 8px 32px rgba(0,0,0,0.06)), var(--glass-inset, inset 0 1px 0 rgba(255,255,255,0.6));
    text-decoration: none;
    color: inherit;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-align: left;
}

.ck-institute-card:hover {
    box-shadow: var(--glass-shadow-hover, 0 12px 40px rgba(0,0,0,0.1));
    transform: translateX(4px);
}

.ck-inst-logo {
    width: 52px;
    height: 52px;
    border-radius: 10px;
    background: var(--color-surface-container);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    overflow: hidden;
}

.ck-inst-logo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.ck-inst-info {
    flex: 1;
    min-width: 0;
}

.ck-inst-name {
    font-family: var(--font-masthead);
    font-size: 18px;
    font-weight: 400;
    letter-spacing: -0.01em;
    color: var(--color-ink-primary);
}

.ck-inst-org {
    font-family: var(--font-ui);
    font-size: 12px;
    color: var(--color-on-surface-variant);
    margin-top: 2px;
}

.ck-inst-tagline {
    font-family: var(--font-ui);
    font-size: 11px;
    color: var(--color-outline);
    margin-top: 2px;
}

.ck-inst-arrow {
    font-size: 20px;
    color: var(--color-outline-variant);
    transition: color 0.2s;
}

.ck-institute-card:hover .ck-inst-arrow {
    color: var(--color-accent);
}

/* ====== FOOTER ====== */

.ck-footer {
    text-align: center;
    padding: 40px var(--space-outer-margin);
    border-top: 1px solid var(--color-rule-line);
    background: var(--color-surface-container);
}

.ck-footer-brand {
    font-family: var(--font-masthead);
    font-size: 24px;
    font-weight: 400;
    letter-spacing: -0.01em;
    color: var(--color-ink-primary);
    margin-bottom: 8px;
}

.ck-footer-text {
    font-family: var(--font-body);
    font-size: 13px;
    color: var(--color-on-surface-variant);
    margin-bottom: 4px;
}

.ck-footer-copy {
    font-family: var(--font-ui);
    font-size: 11px;
    color: var(--color-outline);
}

/* ====== REGISTER PAGE ====== */

.ck-register {
    height: calc(100vh - 48px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: var(--color-surface);
    overflow: hidden; /* Prevent body scrolling */
}

.ck-register-back {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-family: var(--font-ui);
    font-size: 13px;
    color: var(--color-on-surface-variant);
    text-decoration: none;
    margin-bottom: 24px;
    transition: color 0.2s;
}

.ck-register-back:hover {
    color: var(--color-accent);
}

.ck-register-card {
    width: 100%;
    max-width: 440px;
    margin: 0 auto;
    background: var(--glass-bg-strong, rgba(255,255,255,0.72));
    backdrop-filter: var(--glass-blur-heavy, blur(28px));
    -webkit-backdrop-filter: var(--glass-blur-heavy, blur(28px));
    border: 1px solid var(--glass-border, rgba(255,255,255,0.45));
    border-radius: 16px;
    padding: 32px;
    box-shadow: var(--glass-shadow, 0 8px 32px rgba(0,0,0,0.06)), var(--glass-inset, inset 0 1px 0 rgba(255,255,255,0.6));
    max-height: calc(100vh - 120px);
    overflow-y: auto;
}

.ck-register-brand {
    font-family: var(--font-masthead);
    font-size: 28px;
    font-weight: 400;
    letter-spacing: -0.01em;
    color: var(--color-ink-primary);
    text-align: center;
    margin-bottom: 8px;
}

.ck-register-title {
    font-family: var(--font-headline);
    font-size: 22px;
    font-weight: 600;
    color: var(--color-ink-primary);
    text-align: center;
    margin-bottom: 4px;
}

.ck-register-subtitle {
    font-family: var(--font-body);
    font-size: 13px;
    color: var(--color-on-surface-variant);
    text-align: center;
    line-height: 1.5;
    margin-bottom: 28px;
}

/* Steps */
.ck-steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 32px;
    margin-bottom: 28px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--color-rule-line);
}

.ck-step {
    display: flex;
    align-items: center;
    gap: 6px;
    font-family: var(--font-ui);
    font-size: 12px;
    font-weight: 500;
    color: var(--color-outline);
    transition: color 0.2s;
}

.ck-step span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--color-surface-container);
    font-size: 11px;
    font-weight: 700;
    transition: all 0.2s;
}

.ck-step.active {
    color: var(--color-accent);
}

.ck-step.active span {
    background: var(--color-accent);
    color: #fff;
}

.ck-step.done span {
    background: var(--color-accent-container);
    color: var(--color-accent);
}

/* Form */
.ck-form-group {
    margin-bottom: 20px;
}

.ck-form-label {
    display: block;
    font-family: var(--font-ui);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--color-on-surface);
    margin-bottom: 6px;
}

.ck-form-label .required { color: var(--color-error); }
.ck-form-label .optional { font-weight: 400; text-transform: none; font-size: 11px; color: var(--color-outline); }

.ck-form-input {
    width: 100%;
    font-family: var(--font-ui);
    font-size: 14px;
    padding: 10px 14px;
    border: 1px solid var(--color-rule-line);
    border-radius: 6px;
    background: var(--color-surface-container-lowest);
    color: var(--color-on-surface);
    outline: none;
    transition: border-color 0.2s;
}

.ck-form-input:focus {
    border-color: var(--color-accent);
}

.ck-form-hint {
    font-family: var(--font-ui);
    font-size: 11px;
    color: var(--color-outline);
    margin-top: 4px;
}

.ck-form-error {
    font-family: var(--font-ui);
    font-size: 12px;
    color: var(--color-error);
    background: var(--color-error-container);
    padding: 8px 12px;
    border-radius: 6px;
    margin-bottom: 16px;
}

.ck-slug-preview {
    display: flex;
    align-items: stretch;
}

.ck-slug-prefix {
    display: flex;
    align-items: center;
    padding: 0 12px;
    font-family: var(--font-ui);
    font-size: 13px;
    color: var(--color-outline);
    background: var(--color-surface-container);
    border: 1px solid var(--color-rule-line);
    border-right: none;
    border-radius: 6px 0 0 6px;
    white-space: nowrap;
}

/* Spinner */
@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ====== RESPONSIVE ====== */

@media (max-width: 768px) {
    .ck-hero {
        padding: 48px var(--space-outer-margin) 40px;
    }

    .ck-features-grid {
        grid-template-columns: 1fr;
    }

    .ck-hero-actions {
        flex-direction: column;
    }

    .ck-hero-actions .ck-btn {
        width: 100%;
        justify-content: center;
    }

    .ck-steps {
        gap: 16px;
    }

    .ck-register-card {
        padding: 28px 20px;
    }

    .ck-slug-prefix {
        font-size: 11px;
        padding: 0 8px;
    }
}

@media (max-width: 480px) {
    .ck-features-grid {
        grid-template-columns: 1fr;
    }
}