/* -------------------------------------------------------------
 * Custom Stylesheet for Gilang Portfolio
 * Theme: Elegant, Modern & Friendly
 * Accent Color: Crimson Red (matches user mockup) & Deep Slate
 * ------------------------------------------------------------- */

/* Root Variables */
:root {
    --primary-color: #e11d48;       /* Crimson Red */
    --primary-hover: #be123c;
    --primary-light: #ffe4e6;
    --secondary-color: #4f46e5;     /* Elegant Indigo */
    --secondary-hover: #4338ca;
    --dark-color: #0f172a;          /* Deep Slate */
    --light-color: #f8fafc;         /* Off White */
    --text-main: #1e293b;           /* Slate 800 */
    --text-muted: #64748b;          /* Slate 500 */
    --body-bg: #ffffff;
    --card-bg: rgba(255, 255, 255, 0.85);
    --border-color: rgba(241, 245, 249, 0.8);
    --font-heading: 'Outfit', 'Plus Jakarta Sans', sans-serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;
    --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 10px 15px -3px rgba(15, 23, 42, 0.05), 0 4px 6px -4px rgba(15, 23, 42, 0.05);
    --shadow-lg: 0 20px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.08);
}

/* Global Reset & Base Styles */
html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: var(--text-main);
    background-color: var(--body-bg);
    overflow-x: hidden;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--dark-color);
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition-smooth);
}

a:hover {
    color: var(--primary-hover);
}

/* Page Loader */
.page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #ffffff;
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.page-loader.fade-out {
    opacity: 0;
    visibility: hidden;
}

/* --- Navigation Customization --- */
.custom-navbar {
    background-color: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-bottom: 1px solid rgba(241, 245, 249, 0.9);
    padding: 1.2rem 0;
    transition: var(--transition-smooth);
    z-index: 1030;
}

.logo-brand {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.8rem;
    color: var(--dark-color) !important;
    letter-spacing: -0.5px;
}

.logo-dot {
    color: var(--primary-color);
}

.custom-navbar .nav-link {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.05rem;
    color: var(--text-main) !important;
    padding: 0.5rem 1.2rem !important;
    position: relative;
    transition: var(--transition-smooth);
}

.custom-navbar .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 1.2rem;
    right: 1.2rem;
    height: 3px;
    background-color: var(--primary-color);
    border-radius: 2px;
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.custom-navbar .nav-link:hover {
    color: var(--primary-color) !important;
}

.custom-navbar .nav-link:hover::after,
.custom-navbar .nav-link.active::after {
    transform: scaleX(1);
    transform-origin: left;
}

.custom-navbar .nav-link.active {
    color: var(--primary-color) !important;
}

/* Nav CTA Button */
.btn-cta-nav {
    background-color: var(--primary-color);
    color: #ffffff !important;
    font-weight: 600;
    border: 2px solid var(--primary-color);
    box-shadow: 0 4px 10px rgba(225, 29, 72, 0.2);
    transition: var(--transition-smooth);
}

.btn-cta-nav:hover {
    background-color: var(--primary-hover);
    border-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(225, 29, 72, 0.3);
}

/* Custom Hamburger Menu Toggle */
.navbar-toggler {
    border: none !important;
    padding: 0.25rem 0.75rem;
}

.navbar-toggler:focus {
    box-shadow: none !important;
}

.toggler-icon {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--dark-color);
    margin: 5px 0;
    transition: var(--transition-smooth);
    border-radius: 1px;
}

.navbar-toggler:not(.collapsed) .top-bar {
    transform: translateY(7px) rotate(45deg);
}

.navbar-toggler:not(.collapsed) .middle-bar {
    opacity: 0;
}

.navbar-toggler:not(.collapsed) .bottom-bar {
    transform: translateY(-7px) rotate(-45deg);
}

/* --- Hero Section & Custom Buttons --- */
.hero-section {
    padding: 8rem 0 6rem 0;
    position: relative;
    background: radial-gradient(circle at 90% 10%, rgba(254, 242, 242, 0.5) 0%, rgba(255, 255, 255, 0) 60%);
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.hero-subtitle {
    font-size: 1.8rem;
    font-weight: 500;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.hero-description {
    font-size: 1.15rem;
    line-height: 1.8;
    color: var(--text-muted);
    max-width: 600px;
}

/* Elegant Buttons */
.btn-elegant-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
    color: #ffffff;
    font-weight: 600;
    padding: 0.8rem 2.2rem;
    border-radius: 50px;
    border: none;
    box-shadow: 0 4px 15px rgba(225, 29, 72, 0.25);
    transition: var(--transition-smooth);
}

.btn-elegant-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(225, 29, 72, 0.4);
    color: #ffffff;
}

.btn-elegant-secondary {
    background-color: transparent;
    color: var(--dark-color);
    font-weight: 600;
    padding: 0.8rem 2.2rem;
    border-radius: 50px;
    border: 2px solid var(--dark-color);
    transition: var(--transition-smooth);
}

.btn-elegant-secondary:hover {
    background-color: var(--dark-color);
    color: #ffffff;
    transform: translateY(-3px);
}

/* Typing Cursor */
.typewrite-cursor {
    border-right: 0.08em solid var(--primary-color);
    animation: blink-caret 0.75s step-end infinite;
}

@keyframes blink-caret {
    from, to { border-color: transparent }
    50% { border-color: var(--primary-color); }
}

/* --- Home Highlight Section --- */
.highlight-section {
    background-color: var(--light-color);
    border-radius: 24px;
    padding: 3rem;
    box-shadow: var(--shadow-sm);
    margin-bottom: 5rem;
}

.highlight-box {
    text-align: center;
    padding: 1.5rem;
}

.highlight-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary-color);
    line-height: 1;
    margin-bottom: 0.5rem;
}

.highlight-text {
    font-size: 1rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* --- Keahlian (Skills) Cards --- */
.skill-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 18px;
    padding: 2.2rem;
    height: 100%;
    transition: var(--transition-smooth);
    box-shadow: var(--shadow-sm);
}

.skill-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(225, 29, 72, 0.15);
}

.skill-icon-wrapper {
    width: 60px;
    height: 60px;
    border-radius: 14px;
    background-color: var(--primary-light);
    color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    transition: var(--transition-smooth);
}

.skill-card:hover .skill-icon-wrapper {
    background-color: var(--primary-color);
    color: #ffffff;
}

/* --- Section Formatting --- */
.section-title-wrapper {
    margin-bottom: 4rem;
}

.section-tag {
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--primary-color);
    margin-bottom: 0.75rem;
    display: inline-block;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    position: relative;
}

/* --- Halaman Tentang: Timeline & Progress Bar --- */
.profile-image-wrapper {
    position: relative;
    display: inline-block;
}

.profile-image-wrapper::before {
    content: '';
    position: absolute;
    top: 15px;
    left: 15px;
    right: -15px;
    bottom: -15px;
    border: 3px solid var(--primary-color);
    border-radius: 24px;
    z-index: -1;
    transition: var(--transition-smooth);
}

.profile-image-wrapper:hover::before {
    transform: translate(-10px, -10px);
}

.profile-img {
    border-radius: 24px;
    object-fit: cover;
    box-shadow: var(--shadow-md);
    width: 100%;
    max-width: 420px;
}

.timeline {
    position: relative;
    padding-left: 30px;
    border-left: 2px solid var(--border-color);
    margin-left: 10px;
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
}

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

.timeline-marker {
    position: absolute;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background-color: var(--primary-color);
    left: -39px;
    top: 5px;
    border: 3px solid #ffffff;
    box-shadow: 0 0 0 4px rgba(225, 29, 72, 0.15);
    transition: var(--transition-smooth);
}

.timeline-item:hover .timeline-marker {
    background-color: var(--secondary-color);
    box-shadow: 0 0 0 6px rgba(79, 70, 229, 0.2);
}

.timeline-date {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--primary-color);
    font-size: 0.95rem;
    margin-bottom: 0.5rem;
}

.timeline-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.timeline-org {
    font-weight: 500;
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 0.75rem;
}

/* Custom Badges */
.skill-badge {
    background-color: var(--light-color);
    color: var(--text-main);
    border: 1px solid var(--border-color);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-weight: 500;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition-smooth);
}

.skill-badge:hover {
    background-color: var(--primary-light);
    color: var(--primary-color);
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

/* Custom Progress Bar */
.progress-label-wrapper {
    display: flex;
    justify-content: space-between;
    font-weight: 600;
    margin-bottom: 0.4rem;
}

.custom-progress {
    height: 8px;
    background-color: var(--light-color);
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 1.5rem;
}

.custom-progress-bar {
    height: 100%;
    background: linear-gradient(95deg, var(--primary-color), var(--secondary-color));
    border-radius: 10px;
    width: 0; /* Animated via JS */
    transition: width 1.5s cubic-bezier(0.16, 1, 0.3, 1);
}

/* --- Halaman Proyek: Filter & Cards --- */
.filter-btn {
    border: 1px solid var(--border-color);
    background-color: transparent;
    color: var(--text-muted);
    font-weight: 600;
    padding: 0.6rem 1.5rem;
    border-radius: 50px;
    transition: var(--transition-smooth);
    margin: 0.25rem;
}

.filter-btn:hover,
.filter-btn.active {
    background-color: var(--primary-color);
    color: #ffffff;
    border-color: var(--primary-color);
    box-shadow: 0 4px 12px rgba(225, 29, 72, 0.2);
}

.project-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-smooth);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(225, 29, 72, 0.1);
}

.project-img-wrapper {
    position: relative;
    overflow: hidden;
    padding-top: 56.25%; /* 16:9 Aspect Ratio */
}

.project-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.project-card:hover .project-img {
    transform: scale(1.08);
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(15, 23, 42, 0.8), rgba(15, 23, 42, 0));
    opacity: 0;
    transition: var(--transition-smooth);
    display: flex;
    align-items: flex-end;
    padding: 1.5rem;
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.project-tag-badge {
    background-color: var(--primary-color);
    color: #ffffff;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 0.4rem 0.8rem;
    border-radius: 50px;
}

.project-body {
    padding: 1.8rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.project-title {
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 0.6rem;
}

.project-text {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.project-tech-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-bottom: 1.5rem;
}

.project-tech-item {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    background-color: var(--light-color);
    padding: 0.25rem 0.6rem;
    border-radius: 4px;
    border: 1px solid var(--border-color);
}

.btn-card-action {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--dark-color);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: auto;
    width: fit-content;
}

.btn-card-action i {
    transition: transform 0.3s ease;
}

.btn-card-action:hover {
    color: var(--primary-color);
}

.btn-card-action:hover i {
    transform: translateX(4px);
}

/* Modals */
.custom-modal .modal-content {
    border-radius: 24px;
    border: none;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.custom-modal .modal-header {
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem 2rem;
}

.custom-modal .modal-body {
    padding: 2rem;
}

/* --- Halaman Kontak: Form & Cards --- */
.contact-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: var(--shadow-sm);
    height: 100%;
    transition: var(--transition-smooth);
}

.contact-card:hover {
    box-shadow: var(--shadow-md);
}

.contact-icon-wrapper {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    background-color: var(--primary-light);
    color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    margin-bottom: 1.2rem;
}

.contact-title {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 0.4rem;
}

.contact-detail {
    font-size: 0.95rem;
    color: var(--text-muted);
}

/* Floating Form Control Customization */
.form-floating > .form-control {
    border-radius: 12px;
    border: 1px solid var(--border-color);
    background-color: var(--light-color);
    color: var(--text-main);
}

.form-floating > .form-control:focus {
    background-color: #ffffff;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(225, 29, 72, 0.1);
}

.form-floating > label {
    color: var(--text-muted);
}

/* Success Alert Animation */
.alert-custom-success {
    background-color: #f0fdf4;
    border: 1px solid #bbf7d0;
    color: #166534;
    border-radius: 16px;
    padding: 1.2rem;
    display: flex;
    align-items: center;
    gap: 0.8rem;
    box-shadow: var(--shadow-sm);
    animation: slideDown 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* --- Footer Customization --- */
.footer {
    background-color: #0b0f19;
    color: #94a3b8;
    border-top: 1px solid #1e293b;
}

.footer-brand {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.6rem;
    color: #ffffff !important;
    letter-spacing: -0.5px;
}

.footer .social-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background-color: #1e293b;
    color: #94a3b8;
    margin-left: 0.8rem;
    font-size: 1.1rem;
    transition: var(--transition-smooth);
}

.footer .social-icon:hover {
    background-color: var(--primary-color);
    color: #ffffff;
    transform: translateY(-3px);
}

.copyright-text {
    font-size: 0.85rem;
}

/* --- Back to Top Button --- */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: 0 4px 12px rgba(225, 29, 72, 0.3);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-smooth);
    z-index: 99;
}

.back-to-top:hover {
    background-color: var(--primary-hover);
    color: #ffffff;
    transform: translateY(-3px);
    box-shadow: 0 6px 16px rgba(225, 29, 72, 0.4);
}

.back-to-top.active {
    opacity: 1;
    visibility: visible;
}

/* Utility Animations */
.fade-in-up {
    animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}