/* ============================================================
   SEO Portfolio Showcase — Ace360 Degree
   Premium Design System
   ============================================================ */

/* ===== CSS Variables ===== */
:root {
    --bg-base: #f3f4f8;
    --bg-white: #ffffff;
    --bg-card: #ffffff;
    --bg-skeleton: #e2e5eb;

    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --text-link: #334155;

    --accent-navy: #1e293b;
    --accent-blue: #3b82f6;
    --accent-orange: #e8590c;
    --accent-orange-light: #fff4ed;
    --accent-green: #059669;
    --accent-green-light: #ecfdf5;
    --accent-purple: #7c3aed;
    --accent-purple-light: #f5f3ff;
    --accent-red: #dc2626;
    --accent-red-light: #fef2f2;

    --border-light: #e2e8f0;
    --border-card: #eaeef3;

    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
    --shadow-hover: 0 12px 40px rgba(0,0,0,0.15);

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 20px;

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-spring: 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

/* ===== Reset & Base ===== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    background: var(--bg-base);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* ===== Header ===== */
.site-header {
    background: var(--bg-white);
    border-bottom: 1px solid var(--border-light);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(12px);
    background: rgba(255, 255, 255, 0.92);
}

.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.header-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--accent-navy) 0%, #334155 100%);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.brand-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.brand-name {
    font-weight: 700;
    font-size: 16px;
    color: var(--text-primary);
}

.brand-sub {
    font-size: 11px;
    color: var(--text-muted);
    font-weight: 500;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.header-nav {
    display: flex;
    gap: 8px;
}

.nav-link {
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

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

/* ===== Hero Section ===== */
.hero-section {
    text-align: center;
    padding: 60px 24px 32px;
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: 36px;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.5px;
    margin-bottom: 12px;
}

.hero-subtitle {
    font-size: 16px;
    color: var(--text-secondary);
    font-weight: 400;
    margin-bottom: 32px;
}

/* ===== Search Bar ===== */
.search-wrapper {
    max-width: 420px;
    margin: 0 auto 24px;
}

.search-bar {
    position: relative;
    display: flex;
    align-items: center;
}

.search-icon {
    position: absolute;
    left: 16px;
    color: var(--text-muted);
    pointer-events: none;
}

.search-input {
    width: 100%;
    padding: 12px 16px 12px 44px;
    border: 1.5px solid var(--border-light);
    border-radius: 50px;
    font-family: var(--font-family);
    font-size: 14px;
    color: var(--text-primary);
    background: var(--bg-white);
    outline: none;
    transition: all var(--transition-fast);
}

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

.search-input:focus {
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* ===== Filter Pills ===== */
.filter-pills {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
    padding: 0 16px;
}

.pill {
    padding: 8px 20px;
    border: 1.5px solid var(--border-light);
    border-radius: 50px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--bg-white);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.pill:hover {
    border-color: var(--accent-navy);
    color: var(--text-primary);
    transform: translateY(-1px);
}

.pill.active {
    background: var(--accent-navy);
    border-color: var(--accent-navy);
    color: #ffffff;
    box-shadow: 0 2px 8px rgba(30, 41, 59, 0.25);
}

/* ===== Projects Container ===== */
.projects-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 24px 60px;
}

/* ===== Projects Grid ===== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

/* ===== Project Card ===== */
.card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-card);
    transition: all var(--transition-smooth);
}

.project-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: transparent;
}

.card-link {
    display: block;
    height: 100%;
}

.card-thumb {
    position: relative;
    height: 200px;
    overflow: hidden;
    background: var(--bg-skeleton);
}

.thumb-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-smooth);
}

.project-card:hover .thumb-img {
    transform: scale(1.05);
}

.video-play-overlay {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 36px;
    height: 36px;
    background: rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(4px);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
    transition: all var(--transition-fast);
}

.video-play-overlay svg {
    width: 18px;
    height: 18px;
    margin-left: 2px;
}

.project-card:hover .video-play-overlay {
    background: rgba(232, 89, 12, 0.85);
    transform: scale(1.1);
}

.card-body {
    padding: 20px;
}

.card-title {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 10px;
    line-height: 1.3;
}

.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 14px;
}

.tag-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    transition: all var(--transition-fast);
}

/* Tag Colors */
.tag-on-page-seo {
    background: var(--accent-orange-light);
    color: var(--accent-orange);
}

.tag-off-page-seo {
    background: var(--accent-green-light);
    color: var(--accent-green);
}

.tag-backlinks {
    background: var(--accent-purple-light);
    color: var(--accent-purple);
}

.tag-google-ads {
    background: var(--accent-red-light);
    color: var(--accent-red);
}

.tag-active {
    box-shadow: 0 0 0 2px currentColor;
}

.tag-clear {
    background: var(--bg-base);
    color: var(--text-secondary);
    cursor: pointer;
}

.tag-clear:hover {
    background: #dde0e5;
}

.card-action {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-link);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.card-action .arrow {
    transition: transform var(--transition-fast);
}

.project-card:hover .card-action {
    color: var(--accent-orange);
}

.project-card:hover .card-action .arrow {
    transform: translateX(3px);
}

/* ===== Skeleton Loading ===== */
.skeleton-card {
    pointer-events: none;
}

.skeleton-thumb {
    height: 200px;
    background: var(--bg-skeleton);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.skeleton-body {
    padding: 20px;
}

.skeleton-title {
    height: 20px;
    width: 65%;
    background: var(--bg-skeleton);
    border-radius: 4px;
    margin-bottom: 12px;
}

.skeleton-tag {
    height: 22px;
    width: 80px;
    background: var(--bg-skeleton);
    border-radius: 4px;
    margin-bottom: 14px;
}

.skeleton-link {
    height: 16px;
    width: 120px;
    background: var(--bg-skeleton);
    border-radius: 4px;
}

/* Shimmer Animation */
.shimmer {
    position: relative;
    overflow: hidden;
}

.shimmer::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent 0%,
        rgba(255, 255, 255, 0.5) 50%,
        transparent 100%
    );
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

/* ===== Empty State ===== */
.empty-state {
    text-align: center;
    padding: 60px 24px;
    grid-column: 1 / -1;
}

.empty-state svg {
    margin: 0 auto 16px;
}

.empty-state h3 {
    font-size: 18px;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.empty-state p {
    font-size: 14px;
    color: var(--text-muted);
}

/* ===== Card Entrance Animation ===== */
.project-card {
    opacity: 0;
    transform: translateY(24px);
    animation: cardIn 0.5s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes cardIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.project-card:nth-child(1) { animation-delay: 0.05s; }
.project-card:nth-child(2) { animation-delay: 0.1s; }
.project-card:nth-child(3) { animation-delay: 0.15s; }
.project-card:nth-child(4) { animation-delay: 0.2s; }
.project-card:nth-child(5) { animation-delay: 0.25s; }
.project-card:nth-child(6) { animation-delay: 0.3s; }
.project-card:nth-child(7) { animation-delay: 0.35s; }
.project-card:nth-child(8) { animation-delay: 0.4s; }
.project-card:nth-child(9) { animation-delay: 0.45s; }
.project-card:nth-child(10) { animation-delay: 0.5s; }

/* ===== Detail Page ===== */
.detail-page {
    max-width: 1000px;
    margin: 0 auto;
    padding: 24px 24px 60px;
}

.detail-nav {
    margin-bottom: 24px;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.back-link:hover {
    background: var(--bg-white);
    color: var(--text-primary);
    box-shadow: var(--shadow-sm);
}

/* Detail Header */
.detail-header {
    background: var(--bg-white);
    border-radius: var(--radius-xl);
    padding: 40px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-card);
    margin-bottom: 32px;
}

.detail-title {
    font-size: 32px;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.5px;
    margin-bottom: 16px;
}

.detail-meta {
    display: flex;
    gap: 24px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-secondary);
}

.meta-item svg {
    color: var(--text-muted);
}

.detail-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.detail-tags .tag-badge {
    cursor: pointer;
    padding: 6px 14px;
    font-size: 12px;
}

.detail-tags .tag-badge:hover {
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.detail-description {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Media Gallery */
.media-gallery {
    margin-bottom: 32px;
}

.section-heading {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 20px;
}

.section-heading svg {
    color: var(--accent-orange);
}

.media-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.media-item {
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-card);
    transition: all var(--transition-smooth);
}

.media-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.media-image-wrapper {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16/10;
    background: var(--bg-skeleton);
}

.media-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-smooth);
}

.media-item:hover .media-img {
    transform: scale(1.03);
}

.media-video-wrapper {
    position: relative;
    aspect-ratio: 16/9;
    background: #000;
}

.media-video {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

/* Content Sections */
.content-sections {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.content-block {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-card);
    transition: all var(--transition-smooth);
}

.content-block:hover {
    box-shadow: var(--shadow-md);
}

.content-block-header {
    padding: 24px 28px 0;
}

.content-tag-indicator {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    margin-bottom: 12px;
}

.content-block-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.content-block-body {
    padding: 16px 28px 28px;
}

.content-block-body p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
}

.empty-content {
    text-align: center;
    padding: 48px 24px;
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-card);
}

.empty-content p {
    color: var(--text-muted);
    margin-bottom: 16px;
}

.btn-show-all {
    display: inline-flex;
    align-items: center;
    padding: 10px 24px;
    background: var(--accent-navy);
    color: white;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    transition: all var(--transition-fast);
}

.btn-show-all:hover {
    background: #334155;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
    color: white;
}

/* ===== Footer ===== */
.site-footer {
    margin-top: auto;
    background: var(--bg-white);
    border-top: 1px solid var(--border-light);
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 24px;
    text-align: center;
}

.footer-inner p {
    font-size: 13px;
    color: var(--text-muted);
}

.footer-tagline {
    color: var(--accent-blue);
    font-weight: 500;
}

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

@media (max-width: 768px) {
    .hero-title {
        font-size: 28px;
    }

    .hero-subtitle {
        font-size: 14px;
    }

    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .card-thumb {
        height: 160px;
    }

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

    .detail-header {
        padding: 28px 20px;
    }

    .detail-title {
        font-size: 24px;
    }

    .content-block-header {
        padding: 20px 20px 0;
    }

    .content-block-body {
        padding: 12px 20px 20px;
    }

    .detail-meta {
        flex-direction: column;
        gap: 8px;
    }
}

@media (max-width: 520px) {
    .projects-grid {
        grid-template-columns: 1fr;
    }

    .header-inner {
        padding: 0 16px;
    }

    .hero-section {
        padding: 40px 16px 24px;
    }

    .projects-container {
        padding: 24px 16px 40px;
    }

    .filter-pills {
        gap: 6px;
    }

    .pill {
        padding: 7px 14px;
        font-size: 12px;
    }
}

/* ===== Scroll Animations ===== */
.project-card.card-visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== Modal Popup ===== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.7);
    backdrop-filter: blur(8px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

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

.modal-container {
    background: var(--bg-base);
    width: 100%;
    max-width: 1000px;
    max-height: 90vh;
    border-radius: var(--radius-xl);
    position: relative;
    overflow-y: auto;
    transform: translateY(30px) scale(0.95);
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.modal-overlay.active .modal-container {
    transform: translateY(0) scale(1);
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    box-shadow: var(--shadow-md);
    z-index: 10;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    color: var(--accent-red);
    transform: rotate(90deg);
}

.modal-content {
    padding: 24px;
}

/* Hide scrollbar for modal completely */
.modal-container {
    scrollbar-width: none; /* Firefox */
}

.modal-container::-webkit-scrollbar {
    display: none; /* Chrome, Safari, Opera */
}

@media (max-width: 768px) {
    .modal-overlay {
        padding: 12px;
    }
    
    .modal-container {
        max-height: 95vh;
        border-radius: var(--radius-lg);
    }
    
    .modal-content {
        padding: 16px;
    }
    
    .modal-close {
        top: 12px;
        right: 12px;
        width: 32px;
        height: 32px;
    }
}