/* ============================================
   SIMAN Landing Page — Styles
   ============================================ */

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

:root {
    --color-primary: #1a5cff;
    --color-primary-dark: #0043d9;
    --color-primary-light: #e8f0ff;
    --color-secondary: #0ea5e9;
    --color-accent: #6366f1;
    --color-bg: #ffffff;
    --color-bg-alt: #f8fafc;
    --color-bg-dark: #0f172a;
    --color-text: #1e293b;
    --color-text-muted: #64748b;
    --color-border: #e2e8f0;
    --color-success: #22c55e;
    --color-orange: #f97316;
    --color-red: #ef4444;
    --color-purple: #8b5cf6;
    --color-teal: #14b8a6;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.08);
    --shadow-xl: 0 20px 60px rgba(0,0,0,0.1);
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

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

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

a {
    text-decoration: none;
    color: inherit;
}

/* ── Gradient Text ── */
.text-gradient {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 50%, var(--color-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ── Buttons ── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 13px 28px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 15px;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}

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

.btn-primary:hover {
    background: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(26, 92, 255, 0.3);
}

.btn-outline {
    background: transparent;
    color: var(--color-text);
    border-color: var(--color-border);
}

.btn-outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: translateY(-2px);
}

.btn-lg {
    padding: 16px 36px;
    font-size: 16px;
}

/* ── Section Utils ── */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-badge {
    display: inline-block;
    background: var(--color-primary-light);
    color: var(--color-primary);
    font-weight: 600;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    padding: 6px 16px;
    border-radius: 50px;
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(28px, 4vw, 42px);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}

.section-subtitle {
    font-size: 17px;
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================
   NAVBAR
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(226, 232, 240, 0.6);
    transition: var(--transition);
}

.navbar.scrolled {
    box-shadow: var(--shadow-sm);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 800;
    color: var(--color-text);
}

.nav-logo-img {
    height: 38px;
    width: auto;
}

.nav-logo-fallback {
    align-items: center;
    gap: 8px;
    color: var(--color-primary);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-links a {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-muted);
    transition: var(--transition);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    border-radius: 2px;
    transition: var(--transition);
}

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

.nav-links a:hover::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    width: 22px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: var(--transition);
}

/* ============================================
   HERO
   ============================================ */
.hero {
    position: relative;
    padding: 140px 0 100px;
    overflow: hidden;
    background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
}

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

.shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.06;
}

.shape-1 {
    width: 600px;
    height: 600px;
    background: var(--color-primary);
    top: -200px;
    right: -100px;
}

.shape-2 {
    width: 400px;
    height: 400px;
    background: var(--color-accent);
    bottom: -100px;
    left: -100px;
}

.shape-3 {
    width: 250px;
    height: 250px;
    background: var(--color-secondary);
    top: 40%;
    left: 50%;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--color-primary-light);
    color: var(--color-primary);
    font-weight: 600;
    font-size: 13px;
    padding: 8px 18px;
    border-radius: 50px;
    margin-bottom: 20px;
    letter-spacing: 0.5px;
}

.hero-title {
    font-size: clamp(36px, 5vw, 56px);
    font-weight: 900;
    line-height: 1.1;
    letter-spacing: -1.5px;
    margin-bottom: 20px;
}

.hero-description {
    font-size: 17px;
    color: var(--color-text-muted);
    line-height: 1.7;
    margin-bottom: 30px;
    max-width: 520px;
}

.hero-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 24px;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 28px;
    font-weight: 800;
    color: var(--color-primary);
}

.stat-suffix {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-primary);
}

.stat-label {
    display: block;
    font-size: 12px;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 2px;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--color-border);
}

/* Hero Image */
.hero-image {
    position: relative;
}

.hero-image-placeholder,
.module-image-placeholder,
.screenshot-placeholder {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    aspect-ratio: 16/11;
}

.hero-image-placeholder img,
.module-image-placeholder img,
.screenshot-placeholder img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.placeholder-content {
    display: none;
    position: absolute;
    inset: 0;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: var(--color-text-muted);
    background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
}

.show-placeholder .placeholder-content {
    display: flex;
}

.placeholder-content i {
    font-size: 40px;
    opacity: 0.3;
}

.placeholder-content p {
    font-size: 14px;
    font-weight: 600;
    opacity: 0.6;
}

.placeholder-content span {
    font-size: 12px;
    opacity: 0.4;
}

/* Float Cards */
.hero-float-card {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 12px;
    background: #fff;
    padding: 14px 20px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(226, 232, 240, 0.5);
    animation: float 6s ease-in-out infinite;
}

.hero-float-card i {
    font-size: 20px;
    color: var(--color-primary);
}

.hero-float-card strong {
    display: block;
    font-size: 13px;
}

.hero-float-card small {
    font-size: 11px;
    color: var(--color-text-muted);
}

.card-1 {
    bottom: -10px;
    left: -30px;
    animation-delay: 0s;
}

.card-2 {
    top: 20px;
    right: -20px;
    animation-delay: -3s;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* ============================================
   FEATURES
   ============================================ */
.features {
    padding: 100px 0;
    background: var(--color-bg);
}

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

.feature-card {
    padding: 32px 28px;
    border-radius: var(--radius-lg);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

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

.feature-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    margin-bottom: 20px;
}

.icon-blue    { background: #e8f0ff; color: var(--color-primary); }
.icon-green   { background: #dcfce7; color: var(--color-success); }
.icon-orange  { background: #fff7ed; color: var(--color-orange); }
.icon-purple  { background: #ede9fe; color: var(--color-purple); }
.icon-red     { background: #fef2f2; color: var(--color-red); }
.icon-teal    { background: #ccfbf1; color: var(--color-teal); }

.feature-card h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
}

.feature-card p {
    font-size: 14px;
    color: var(--color-text-muted);
    line-height: 1.6;
}

/* ============================================
   MODULES
   ============================================ */
.modules {
    padding: 100px 0;
    background: var(--color-bg-alt);
}

.module-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 80px;
}

.module-row:last-child {
    margin-bottom: 0;
}

.module-row.reverse {
    direction: rtl;
}

.module-row.reverse > * {
    direction: ltr;
}

.module-image-placeholder {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
}

.module-image-placeholder:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.module-number {
    font-size: 48px;
    font-weight: 900;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 0.2;
    display: block;
    line-height: 1;
    margin-bottom: 12px;
}

.module-text h3 {
    font-size: 26px;
    font-weight: 800;
    margin-bottom: 14px;
    letter-spacing: -0.3px;
}

.module-text p {
    font-size: 15px;
    color: var(--color-text-muted);
    line-height: 1.7;
    margin-bottom: 20px;
}

.module-features {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.module-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text);
}

.module-features i {
    color: var(--color-success);
    font-size: 16px;
}

/* ============================================
   SCREENSHOTS
   ============================================ */
.screenshots {
    padding: 100px 0;
    background: var(--color-bg);
}

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

.screenshot-card {
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
}

.screenshot-card:hover {
    transform: translateY(-4px);
}

.screenshot-placeholder {
    aspect-ratio: 3/2;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.screenshot-card:hover .screenshot-placeholder {
    box-shadow: var(--shadow-lg);
}

.screenshot-label {
    text-align: center;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text-muted);
    padding: 12px 0 0;
}

/* ============================================
   NUMBERS
   ============================================ */
.numbers {
    padding: 80px 0;
    background: var(--color-bg-dark);
}

.numbers-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    text-align: center;
}

.number-item i {
    font-size: 28px;
    color: var(--color-secondary);
    margin-bottom: 12px;
}

.number-value {
    font-size: 42px;
    font-weight: 900;
    color: #fff;
}

.number-suffix {
    font-size: 28px;
    font-weight: 700;
    color: var(--color-secondary);
}

.number-label {
    display: block;
    font-size: 13px;
    color: rgba(255,255,255,0.5);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-top: 6px;
}

/* ============================================
   CTA
   ============================================ */
.cta {
    padding: 100px 0;
    background: var(--color-bg-alt);
}

.cta-card {
    text-align: center;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    border-radius: var(--radius-xl);
    padding: 60px 40px;
    color: #fff;
}

.cta-card h2 {
    font-size: clamp(24px, 3vw, 36px);
    font-weight: 800;
    margin-bottom: 16px;
}

.cta-card p {
    font-size: 16px;
    opacity: 0.85;
    max-width: 600px;
    margin: 0 auto 30px;
    line-height: 1.7;
}

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

.cta-actions .btn-primary:hover {
    background: rgba(255,255,255,0.9);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.2);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: var(--color-bg-dark);
    padding: 40px 0 24px;
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 24px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 14px;
}

.footer-logo {
    height: 32px;
}

.footer-logo-fallback {
    align-items: center;
    gap: 6px;
    color: #fff;
    font-size: 18px;
    font-weight: 700;
}

.footer-brand p {
    font-size: 13px;
    color: rgba(255,255,255,0.4);
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    font-size: 13px;
    color: rgba(255,255,255,0.5);
    transition: var(--transition);
}

.footer-links a:hover {
    color: #fff;
}

.footer-bottom {
    text-align: center;
    padding-top: 24px;
}

.footer-bottom p {
    font-size: 13px;
    color: rgba(255,255,255,0.35);
}

/* ============================================
   ANIMATIONS
   ============================================ */
[data-animate] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

[data-animate="fade-right"] {
    transform: translateX(-30px);
}

[data-animate="fade-left"] {
    transform: translateX(30px);
}

[data-animate].visible {
    opacity: 1;
    transform: translate(0, 0);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }

    .hero-description { margin: 0 auto 30px; }
    .hero-actions { justify-content: center; }
    .hero-stats { justify-content: center; }
    .hero-image { max-width: 600px; margin: 0 auto; }
    .hero-float-card { display: none; }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .module-row,
    .module-row.reverse {
        grid-template-columns: 1fr;
        gap: 30px;
        direction: ltr;
    }

    .screenshots-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .numbers-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: 20px 24px;
        gap: 16px;
        box-shadow: var(--shadow-md);
        border-top: 1px solid var(--color-border);
    }

    .nav-links.active {
        display: flex;
    }

    .nav-toggle {
        display: flex;
    }

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

    .numbers-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .hero {
        padding: 120px 0 60px;
    }

    .footer-content {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }

    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }

    .cta-card {
        padding: 40px 24px;
    }
}

@media (max-width: 480px) {
    .hero-stats {
        gap: 16px;
    }

    .stat-number {
        font-size: 22px;
    }

    .numbers-grid {
        grid-template-columns: 1fr 1fr;
        gap: 24px;
    }

    .number-value {
        font-size: 32px;
    }
}