/* ============================================
   PROFESSOR DANJUMA SALE - COMPONENTS
   Reusable UI Components
   ============================================ */

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-8);
    font-family: var(--font-primary);
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    text-transform: uppercase;
    letter-spacing: var(--tracking-wider);
    border-radius: var(--radius-full);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    cursor: pointer;
    border: none;
}

.btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.2) 0%, transparent 100%);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.btn:hover::before {
    opacity: 1;
}

/* Hero Primary Button - Solid with shadow glow, hover lift */
.btn-primary {
    background: var(--gradient-gold);
    color: var(--primary-deep);
    box-shadow: 0 4px 20px rgba(201, 162, 39, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 35px rgba(201, 162, 39, 0.6);
}

.btn-primary:active {
    transform: translateY(-1px);
    box-shadow: 0 4px 20px rgba(201, 162, 39, 0.5);
}

/* Hero Outline Button - Glass effect with semi-transparent border */
.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--accent-gold);
    color: var(--accent-gold);
    transform: translateY(-2px);
}

/* Tertiary Button - Ghost */
.btn-tertiary {
    background: var(--surface-glass);
    color: var(--text-primary);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid transparent;
}

.btn-tertiary:hover {
    background: var(--surface-card-hover);
    border-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

/* Button Sizes */
.btn-sm {
    padding: var(--space-2) var(--space-5);
    font-size: var(--text-xs);
}

.btn-lg {
    padding: var(--space-5) var(--space-10);
    font-size: var(--text-base);
}

/* Hero XL Size: h-14, px-10, py-4, font-size lg */
.btn-xl {
    height: 3.5rem;
    padding: var(--space-4) var(--space-10);
    font-size: var(--text-lg);
}

/* Button with Icon */
.btn-icon {
    padding: var(--space-3);
    border-radius: var(--radius-full);
}

.btn-icon svg {
    width: 24px;
    height: 24px;
}

/* ===== Cards ===== */
.card {
    background: var(--surface-card);
    border: 1px solid var(--surface-glass-border);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    transition: all var(--transition-slow);
    position: relative;
}

.card::after {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: inherit;
    background: linear-gradient(135deg, var(--accent-gold) 0%, transparent 40%, transparent 60%, var(--accent-teal) 100%);
    opacity: 0;
    z-index: -1;
    transition: opacity var(--transition-slow);
}

.card:hover {
    transform: translateY(-8px);
    background: var(--surface-card-hover);
    box-shadow: var(--shadow-card);
}

.card:hover::after {
    opacity: 0.5;
}

/* Card with Icon */
.card-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-gold);
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-6);
}

.card-icon svg {
    width: 32px;
    height: 32px;
    color: var(--primary-deep);
}

.card-title {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-3);
}

.card-description {
    font-size: var(--text-base);
    color: var(--text-secondary);
    line-height: var(--leading-relaxed);
}

/* ===== Section Headers ===== */
.section-header {
    text-align: center;
    max-width: 800px;
    margin-inline: auto;
    margin-bottom: var(--space-16);
}

.section-label {
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    text-transform: uppercase;
    letter-spacing: var(--tracking-widest);
    color: var(--accent-gold);
    margin-bottom: var(--space-4);
}

.section-label::before,
.section-label::after {
    content: '';
    width: 30px;
    height: 1px;
    background: var(--gradient-gold);
}

.section-title {
    font-size: var(--text-4xl);
    line-height: var(--leading-tight);
    margin-bottom: var(--space-6);
}

.section-title .highlight {
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-description {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    line-height: var(--leading-relaxed);
}

/* ===== Stats ===== */
.stat {
    text-align: center;
    padding: var(--space-6);
}

.stat-number {
    font-family: var(--font-display);
    font-size: var(--text-4xl);
    font-weight: var(--font-extrabold);
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: var(--leading-none);
    margin-bottom: var(--space-2);
}

.stat-label {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: var(--tracking-wider);
}

/* ===== Badges ===== */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    text-transform: uppercase;
    letter-spacing: var(--tracking-wide);
    border-radius: var(--radius-full);
    background: var(--surface-glass);
    border: 1px solid var(--surface-glass-border);
}

.badge-gold {
    background: rgba(201, 169, 97, 0.15);
    border-color: rgba(201, 169, 97, 0.3);
    color: var(--accent-gold);
}

.badge-teal {
    background: rgba(45, 212, 191, 0.15);
    border-color: rgba(45, 212, 191, 0.3);
    color: var(--accent-teal);
}

/* ===== Forms ===== */
.form-group {
    margin-bottom: var(--space-6);
    position: relative;
}

.form-label {
    display: block;
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--text-secondary);
    margin-bottom: var(--space-2);
    transition: color var(--transition-fast);
}

.form-input {
    width: 100%;
    padding: var(--space-4) var(--space-5);
    font-size: var(--text-base);
    color: var(--text-primary);
    background: var(--surface-card);
    border: 1px solid var(--surface-glass-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

.form-input:focus {
    outline: none;
    border-color: var(--accent-gold);
    box-shadow: 0 0 0 3px rgba(201, 169, 97, 0.2);
}

.form-input::placeholder {
    color: var(--text-muted);
}

textarea.form-input {
    resize: vertical;
    min-height: 120px;
}

/* Floating Label Style */
.form-floating {
    position: relative;
}

.form-floating .form-input {
    padding-top: var(--space-6);
}

.form-floating .form-label {
    position: absolute;
    top: 50%;
    left: var(--space-5);
    transform: translateY(-50%);
    pointer-events: none;
    transition: all var(--transition-fast);
    margin-bottom: 0;
}

.form-floating .form-input:focus~.form-label,
.form-floating .form-input:not(:placeholder-shown)~.form-label {
    top: var(--space-3);
    transform: translateY(0);
    font-size: var(--text-xs);
    color: var(--accent-gold);
}

/* ===== Timeline ===== */
.timeline {
    position: relative;
    padding-left: var(--space-8);
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--accent-gold) 0%, var(--accent-teal) 100%);
}

.timeline-item {
    position: relative;
    padding-bottom: var(--space-12);
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-marker {
    position: absolute;
    left: calc(-1 * var(--space-8) - 8px);
    top: 0;
    width: 18px;
    height: 18px;
    background: var(--primary-deep);
    border: 3px solid var(--accent-gold);
    border-radius: var(--radius-full);
    z-index: 1;
}

.timeline-item:hover .timeline-marker {
    background: var(--accent-gold);
    box-shadow: 0 0 20px rgba(201, 169, 97, 0.5);
}

.timeline-date {
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--accent-gold);
    margin-bottom: var(--space-2);
}

.timeline-title {
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-3);
}

.timeline-description {
    color: var(--text-secondary);
    line-height: var(--leading-relaxed);
}

/* ===== Navigation ===== */
.nav-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    padding: var(--space-5) 0;
    transition: all var(--transition-base);
}

.nav-header.scrolled {
    background: rgba(10, 15, 26, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: var(--space-4) 0;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--text-primary);
}

.nav-logo span {
    color: var(--accent-gold);
}

.nav-menu {
    display: none;
    gap: var(--space-1);
}

@media (min-width: 1024px) {
    .nav-menu {
        display: flex;
    }
}

.nav-link {
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--text-secondary);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--accent-gold);
    transition: width var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 50%;
}

/* Mobile Menu Toggle */
.nav-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-2);
    cursor: pointer;
}

@media (min-width: 1024px) {
    .nav-toggle {
        display: none;
    }
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition-fast);
}

.nav-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Menu */
.nav-mobile {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    max-width: 400px;
    height: 100vh;
    background: var(--primary-deep);
    padding: var(--space-20) var(--space-8);
    transition: right var(--transition-slow);
    z-index: var(--z-modal);
}

.nav-mobile.active {
    right: 0;
    box-shadow: -10px 0 50px rgba(0, 0, 0, 0.5);
}

.nav-mobile-link {
    display: block;
    padding: var(--space-4) 0;
    font-size: var(--text-xl);
    font-weight: var(--font-semibold);
    color: var(--text-secondary);
    border-bottom: 1px solid var(--surface-glass-border);
    transition: color var(--transition-fast);
}

.nav-mobile-link:hover {
    color: var(--accent-gold);
}

/* Mobile Menu Overlay */
.nav-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-slow);
    z-index: calc(var(--z-modal) - 1);
}

.nav-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* ===== Footer ===== */
.footer {
    background: var(--primary-navy);
    padding: var(--space-16) 0 var(--space-8);
    border-top: 1px solid var(--surface-glass-border);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-10);
}

@media (min-width: 768px) {
    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr 1fr;
    }
}

.footer-brand {
    max-width: 300px;
}

.footer-brand-title {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-4);
}

.footer-brand-title span {
    color: var(--accent-gold);
}

.footer-brand-text {
    color: var(--text-secondary);
    line-height: var(--leading-relaxed);
}

.footer-heading {
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    text-transform: uppercase;
    letter-spacing: var(--tracking-wider);
    color: var(--accent-gold);
    margin-bottom: var(--space-6);
}

.footer-link {
    display: block;
    padding: var(--space-2) 0;
    color: var(--text-secondary);
    font-size: var(--text-sm);
    transition: color var(--transition-fast);
}

.footer-link:hover {
    color: var(--text-primary);
}

.footer-bottom {
    margin-top: var(--space-12);
    padding-top: var(--space-8);
    border-top: 1px solid var(--surface-glass-border);
    text-align: center;
    color: var(--text-muted);
    font-size: var(--text-sm);
}

/* ===== Specialty Cards ===== */
.specialty-card {
    position: relative;
    padding: var(--space-8);
    background: var(--surface-card);
    border: 1px solid var(--surface-glass-border);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    transition: all var(--transition-slow);
}

.specialty-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--gradient-gold);
    transform: scaleY(0);
    transform-origin: bottom;
    transition: transform var(--transition-slow);
}

.specialty-card:hover {
    transform: translateY(-8px) translateX(4px);
    border-color: rgba(201, 169, 97, 0.3);
    box-shadow: var(--shadow-card), var(--shadow-glow);
}

.specialty-card:hover::before {
    transform: scaleY(1);
}

.specialty-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(201, 169, 97, 0.1);
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-5);
    transition: all var(--transition-base);
}

.specialty-card:hover .specialty-icon {
    background: var(--gradient-gold);
}

.specialty-icon svg {
    width: 28px;
    height: 28px;
    color: var(--accent-gold);
    transition: color var(--transition-base);
}

.specialty-card:hover .specialty-icon svg {
    color: var(--primary-deep);
}

.specialty-title {
    font-size: var(--text-lg);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-3);
}

.specialty-description {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    line-height: var(--leading-relaxed);
    opacity: 0;
    max-height: 0;
    overflow: hidden;
    transition: all var(--transition-slow);
}

.specialty-card:hover .specialty-description {
    opacity: 1;
    max-height: 200px;
    margin-top: var(--space-4);
}

/* ===== Publication Cards ===== */
.publication-card {
    display: flex;
    gap: var(--space-6);
    padding: var(--space-6);
    background: var(--surface-card);
    border: 1px solid var(--surface-glass-border);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
}

.publication-card:hover {
    background: var(--surface-card-hover);
    transform: translateX(8px);
}

.publication-journal {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--surface-glass);
    border-radius: var(--radius-lg);
    font-size: var(--text-xs);
    font-weight: var(--font-bold);
    text-align: center;
    color: var(--accent-gold);
}

.publication-content {
    flex: 1;
}

.publication-title {
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    margin-bottom: var(--space-2);
    line-height: var(--leading-snug);
}

.publication-meta {
    font-size: var(--text-sm);
    color: var(--text-muted);
}

/* ===== Hospital Service Cards ===== */
.service-card {
    position: relative;
    padding: var(--space-6);
    background: var(--gradient-card);
    border: 1px solid var(--surface-glass-border);
    border-radius: var(--radius-xl);
    text-align: center;
    transition: all var(--transition-base);
    overflow: hidden;
}

.service-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--gradient-gold);
    opacity: 0;
    transition: all var(--transition-base);
}

.service-card:hover {
    transform: translateY(-4px);
    background: var(--surface-card-hover);
}

.service-card:hover::after {
    opacity: 1;
    width: 100px;
}

.service-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--space-4);
    display: flex;
    align-items: center;
    justify-content: center;
}

.service-icon svg {
    width: 32px;
    height: 32px;
    color: var(--accent-teal);
}

.service-title {
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
}