/* ============================================
   SIPO OSIS — Homepage Styles
   ============================================ */

/* ----------------------------------------
   Navbar
   ---------------------------------------- */
.home-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 16px 0;
    transition: all 0.3s ease;
}

.home-nav.scrolled {
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    padding: 10px 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 24px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    color: white;
    text-decoration: none;
    font-weight: 800;
    font-size: 1.3rem;
}

.nav-brand .brand-icon {
    font-size: 1.5rem;
}

.nav-brand .brand-text span {
    color: var(--color-accent);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: white;
    transition: all 0.3s ease;
    display: block;
}

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

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

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

.nav-menu {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-link {
    color: rgba(255, 255, 255, 0.75);
    padding: 8px 16px;
    border-radius: 8px;
    font-weight: 500;
    font-size: 0.9rem;
    text-decoration: none;
    transition: all 0.2s ease;
}

.nav-link:hover,
.nav-link.active {
    color: white;
    background: rgba(255, 255, 255, 0.1);
}

.nav-btn {
    background: var(--color-accent);
    color: white;
    padding: 10px 24px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    text-decoration: none;
    margin-left: 8px;
    transition: all 0.2s ease;
}

.nav-btn:hover {
    background: var(--color-accent-hover);
    transform: translateY(-1px);
}

/* ----------------------------------------
   Hero Section
   ---------------------------------------- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #1e40af 100%);
    padding-top: 80px;
}

.hero-bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
}

.hero-shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.15;
    animation: float 8s ease-in-out infinite;
}

.shape-1 {
    width: 400px;
    height: 400px;
    background: #3b82f6;
    top: -100px;
    right: -100px;
}

.shape-2 {
    width: 300px;
    height: 300px;
    background: #8b5cf6;
    bottom: -50px;
    left: -50px;
    animation-delay: 2s;
}

.shape-3 {
    width: 200px;
    height: 200px;
    background: #06b6d4;
    top: 40%;
    left: 30%;
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-30px); }
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    padding: 0 24px;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    padding: 8px 16px;
    background: rgba(59, 130, 246, 0.2);
    border: 1px solid rgba(59, 130, 246, 0.3);
    border-radius: 100px;
    color: #93c5fd;
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 20px;
}

.hero h1 {
    color: white;
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 20px;
}

.hero-highlight {
    background: linear-gradient(135deg, #3b82f6, #06b6d4);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    color: rgba(255, 255, 255, 0.7);
    font-size: 1.15rem;
    line-height: 1.7;
    margin-bottom: 32px;
    max-width: 500px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.btn-hero {
    padding: 14px 32px;
    border-radius: 10px;
    font-weight: 700;
    font-size: 1rem;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    border: none;
    cursor: pointer;
}

.btn-hero-primary {
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    color: white;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
}

.btn-hero-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.5);
}

.btn-hero-outline {
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: white;
    background: transparent;
}

.btn-hero-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
}

/* Hero Illustration */
.hero-illustration {
    position: relative;
    min-height: 400px;
}

.hero-card-stack {
    position: relative;
    width: 100%;
    height: 400px;
}

.floating-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 12px;
    padding: 16px 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    color: white;
    animation: floatCard 6s ease-in-out infinite;
    position: absolute;
    white-space: nowrap;
}

.card-1 { top: 10%; right: 0; animation-delay: 0s; }
.card-2 { top: 45%; right: 20%; animation-delay: 1s; }
.card-3 { bottom: 15%; right: 5%; animation-delay: 2s; }

.fc-icon { font-size: 1.5rem; }
.fc-text { font-weight: 600; font-size: 1rem; }

@keyframes floatCard {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

/* ----------------------------------------
   Sections (shared)
   ---------------------------------------- */
.section {
    padding: 100px 0;
}

.section-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-badge {
    display: inline-flex;
    padding: 6px 16px;
    background: rgba(59, 130, 246, 0.1);
    color: var(--color-accent);
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 16px;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 16px;
    color: var(--color-text);
}

.text-accent {
    color: var(--color-accent);
}

.section-subtitle {
    color: var(--color-text-light);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
}

/* ----------------------------------------
   About Section
   ---------------------------------------- */
.about-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.about-card {
    text-align: center;
    padding: 32px 24px;
    border-radius: var(--radius-md);
    background: white;
    border: 1px solid var(--color-border);
    transition: all 0.3s ease;
}

.about-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
}

.about-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.about-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--color-text);
}

.about-card p {
    color: var(--color-text-light);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* ----------------------------------------
   Features Section
   ---------------------------------------- */
.features {
    background: var(--color-bg);
}

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

.feature-card {
    background: white;
    padding: 32px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    transition: all 0.3s ease;
    cursor: default;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: white;
}

.feature-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--color-text);
}

.feature-card p {
    color: var(--color-text-light);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* ----------------------------------------
   Stats Section
   ---------------------------------------- */
.stats-section {
    background: linear-gradient(135deg, #0f172a, #1e293b);
    color: white;
}

.stats-grid-home {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

.stat-item {
    text-align: center;
    padding: 32px;
}

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    background: linear-gradient(135deg, #3b82f6, #06b6d4);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 8px;
    line-height: 1.2;
}

.stat-text {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.7);
    font-weight: 500;
}

/* ----------------------------------------
   Registration Section
   ---------------------------------------- */
.register-section {
    background: var(--color-bg);
}

.register-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    max-width: 800px;
    margin: 0 auto;
    border: 1px solid var(--color-border);
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.register-card .form-group {
    margin-bottom: 0;
}

.register-card .form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--color-text);
}

.required {
    color: var(--color-danger);
}

.optional {
    color: var(--color-text-muted);
    font-weight: 400;
}

.register-card .form-control {
    width: 100%;
    padding: 12px 16px;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-family: var(--font-family);
    font-size: 0.9rem;
    transition: all 0.2s ease;
    background: white;
    color: var(--color-text);
    box-sizing: border-box;
}

.register-card .form-control:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
    outline: none;
}

.register-card .form-control.error {
    border-color: var(--color-danger);
}

.register-card .form-control::placeholder {
    color: var(--color-text-muted);
}

.form-error {
    color: var(--color-danger);
    font-size: 0.8rem;
    margin-top: 4px;
    font-weight: 500;
}

.form-hint {
    font-size: 0.8rem;
    margin-top: 4px;
}

.form-hint.available {
    color: var(--color-success);
}

.form-hint.taken {
    color: var(--color-danger);
}

/* Radio Buttons */
.radio-group {
    display: flex;
    gap: 24px;
    padding-top: 6px;
}

.radio-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 0.9rem;
    position: relative;
    color: var(--color-text);
}

.radio-label input[type="radio"] {
    position: absolute;
    opacity: 0;
    cursor: pointer;
}

.radio-custom {
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-border);
    border-radius: 50%;
    position: relative;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.radio-label input[type="radio"]:checked + .radio-custom {
    border-color: var(--color-accent);
    background: var(--color-accent);
}

.radio-label input[type="radio"]:checked + .radio-custom::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 8px;
    height: 8px;
    background: white;
    border-radius: 50%;
}

/* File Upload */
.file-upload {
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-md);
    padding: 24px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
    min-height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.file-upload:hover {
    border-color: var(--color-accent);
    background: rgba(59, 130, 246, 0.02);
}

.file-upload-icon {
    font-size: 2rem;
    margin-bottom: 8px;
}

.file-upload-content p {
    font-size: 0.9rem;
    color: var(--color-text);
    font-weight: 500;
    margin-bottom: 4px;
}

.file-upload-content span {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.photo-preview {
    width: 100%;
    max-height: 200px;
    object-fit: cover;
    border-radius: var(--radius-md);
}

/* Submit Button */
.btn-submit {
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 24px;
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
}

.btn-submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* Alerts */
.home-alert {
    padding: 16px 24px;
    border-radius: var(--radius-md);
    margin-bottom: 24px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.95rem;
    font-weight: 500;
}

.home-alert-success {
    background: #dcfce7;
    color: #166534;
    border: 1px solid #bbf7d0;
}

.home-alert-error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

/* ----------------------------------------
   Footer
   ---------------------------------------- */
.home-footer {
    background: var(--color-primary-dark);
    color: rgba(255, 255, 255, 0.7);
    padding: 60px 0 0;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
}

.footer-col h3 {
    color: white;
    font-size: 1.2rem;
    margin-bottom: 16px;
}

.footer-col h4 {
    color: white;
    font-size: 1rem;
    margin-bottom: 16px;
}

.footer-col p {
    font-size: 0.9rem;
    line-height: 1.7;
}

.footer-col ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-col ul li {
    margin-bottom: 10px;
    font-size: 0.9rem;
}

.footer-col ul a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer-col ul a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 20px 0;
    text-align: center;
    font-size: 0.85rem;
}

/* ----------------------------------------
   Responsive
   ---------------------------------------- */
@media (max-width: 1024px) {
    .about-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    /* Navbar Mobile */
    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -300px;
        width: 280px;
        height: 100vh;
        background: var(--color-primary-dark);
        flex-direction: column;
        padding: 80px 24px 24px;
        transition: right 0.3s ease;
        z-index: 999;
        gap: 8px;
        align-items: stretch;
    }

    .nav-menu.open {
        right: 0;
        box-shadow: -10px 0 30px rgba(0, 0, 0, 0.3);
    }

    .nav-btn {
        margin-left: 0;
        text-align: center;
        margin-top: 8px;
    }

    /* Hero Mobile */
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        padding-top: 40px;
        padding-bottom: 60px;
    }

    .hero h1 {
        font-size: 2.2rem;
    }

    .hero-illustration {
        display: none;
    }

    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-actions {
        justify-content: center;
    }

    /* Sections Mobile */
    .section {
        padding: 60px 0;
    }

    .section-header h2 {
        font-size: 1.8rem;
    }

    .section-header {
        margin-bottom: 40px;
    }

    .about-grid {
        grid-template-columns: 1fr 1fr;
    }

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

    .stats-grid-home {
        grid-template-columns: 1fr 1fr;
    }

    .stat-number {
        font-size: 2.2rem;
    }

    /* Registration Mobile */
    .form-grid {
        grid-template-columns: 1fr;
    }

    .register-card {
        padding: 24px;
    }

    /* Footer Mobile */
    .footer-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.8rem;
    }

    .about-grid {
        grid-template-columns: 1fr;
    }

    .stats-grid-home {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
    }

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

    .stat-item {
        padding: 16px;
    }

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

/* ----------------------------------------
   Mobile Menu Overlay
   ---------------------------------------- */
.nav-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 998;
}

.nav-overlay.active {
    display: block;
}