/* ============================================================
   SimpleSmartRadioPlayer - Product Website Styles
   Dark premium theme with orange accent (#E8893C)
   ============================================================ */

/* --- CSS Variables --- */
:root {
    --color-bg:         #0a0a0a;
    --color-bg-alt:     #111111;
    --color-surface:    #1a1a1a;
    --color-surface-2:  #222222;
    --color-border:     #2a2a2a;
    --color-text:       #e0e0e0;
    --color-text-muted: #888888;
    --color-accent:     #E8893C;
    --color-accent-dark:#c46f28;
    --color-accent-glow: rgba(232, 137, 60, 0.25);
    --color-white:      #ffffff;
    --font-main:        'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --radius-sm:        8px;
    --radius-md:        16px;
    --radius-lg:        24px;
    --radius-xl:        32px;
    --shadow-glow:      0 0 60px rgba(232, 137, 60, 0.15);
    --shadow-card:      0 8px 32px rgba(0, 0, 0, 0.4);
    --transition:       all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Reset & Base --- */
* { box-sizing: border-box; }

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

body {
    font-family: var(--font-main);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

::selection {
    background: var(--color-accent);
    color: var(--color-white);
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: var(--transition);
}
a:hover {
    color: var(--color-accent-dark);
}

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

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
    color: var(--color-white);
    font-weight: 700;
    line-height: 1.2;
}

.text-accent   { color: var(--color-accent) !important; }
.text-gradient {
    background: linear-gradient(135deg, var(--color-accent), #f4b87a);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--color-accent);
    background: var(--color-accent-glow);
    border: 1px solid rgba(232, 137, 60, 0.3);
    padding: 6px 18px;
    border-radius: 50px;
    margin-bottom: 1rem;
}

.section-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.15rem;
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto 3rem;
}

/* --- Navbar --- */
.navbar-dark-custom {
    background: rgba(10, 10, 10, 0.85) !important;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    padding: 0.8rem 0;
    transition: var(--transition);
}
.navbar-dark-custom.scrolled {
    background: rgba(10, 10, 10, 0.95) !important;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.navbar-brand {
    font-weight: 800;
    font-size: 1.25rem;
    color: var(--color-white) !important;
    display: flex;
    align-items: center;
    gap: 10px;
}
.navbar-brand img {
    width: 36px;
    height: 36px;
    border-radius: 8px;
}
.navbar-brand .brand-accent {
    color: var(--color-accent);
}

.navbar-nav .nav-link {
    color: var(--color-text-muted) !important;
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.5rem 1rem !important;
    transition: var(--transition);
}
.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
    color: var(--color-white) !important;
}

.btn-nav-cta {
    background: var(--color-accent);
    color: var(--color-white) !important;
    border: none;
    border-radius: 50px;
    padding: 8px 24px !important;
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition);
}
.btn-nav-cta:hover {
    background: var(--color-accent-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 20px var(--color-accent-glow);
}

/* --- Hero Section --- */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    overflow: hidden;
}

.hero-bg-glow {
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--color-accent-glow) 0%, transparent 70%);
    filter: blur(80px);
    z-index: 0;
    top: 10%;
    right: -10%;
    animation: pulseGlow 6s ease-in-out infinite alternate;
}
.hero-bg-glow-2 {
    position: absolute;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(232, 137, 60, 0.1) 0%, transparent 70%);
    filter: blur(60px);
    z-index: 0;
    bottom: 10%;
    left: -5%;
    animation: pulseGlow 8s ease-in-out infinite alternate-reverse;
}

@keyframes pulseGlow {
    0%   { opacity: 0.5; transform: scale(1); }
    100% { opacity: 1;   transform: scale(1.1); }
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.2rem);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}
.hero-title .line-accent {
    display: block;
    color: var(--color-accent);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-muted);
    max-width: 500px;
    margin-bottom: 2.5rem;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    align-items: center;
}

.btn-primary-custom {
    background: var(--color-accent);
    color: var(--color-white);
    border: none;
    border-radius: 50px;
    padding: 14px 36px;
    font-weight: 700;
    font-size: 1.05rem;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.btn-primary-custom:hover {
    background: var(--color-accent-dark);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--color-accent-glow);
}

.btn-outline-custom {
    background: transparent;
    color: var(--color-text);
    border: 2px solid var(--color-border);
    border-radius: 50px;
    padding: 12px 32px;
    font-weight: 600;
    font-size: 1.05rem;
    transition: var(--transition);
}
.btn-outline-custom:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    transform: translateY(-2px);
}

/* Hero Phone Mockup */
.hero-phone-container {
    position: relative;
    z-index: 1;
    display: flex;
    justify-content: center;
}

.phone-mockup {
    position: relative;
    width: 280px;
    border-radius: 40px;
    overflow: hidden;
    box-shadow:
        0 25px 80px rgba(0, 0, 0, 0.6),
        0 0 0 1px rgba(255, 255, 255, 0.08),
        var(--shadow-glow);
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}
.phone-mockup:hover {
    transform: translateY(-8px) scale(1.02);
}
.phone-mockup img {
    width: 100%;
    display: block;
    border-radius: 40px;
}

.phone-mockup-secondary {
    position: absolute;
    width: 220px;
    border-radius: 32px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    z-index: -1;
    opacity: 0.7;
    transition: var(--transition);
}
.phone-mockup-secondary.left {
    left: -80px;
    top: 60px;
    transform: rotate(-6deg);
}
.phone-mockup-secondary.right {
    right: -80px;
    top: 40px;
    transform: rotate(6deg);
}
.phone-mockup-secondary img {
    width: 100%;
    display: block;
    border-radius: 32px;
}

/* --- Stats Bar --- */
.stats-bar {
    padding: 3rem 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    background: var(--color-bg-alt);
}
.stat-item {
    text-align: center;
    padding: 1rem;
}
.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: 0.3rem;
}
.stat-label {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    font-weight: 500;
}

/* --- Feature Cards --- */
.features-section {
    padding: 100px 0;
}

.feature-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 2.5rem 2rem;
    height: 100%;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-accent), transparent);
    opacity: 0;
    transition: var(--transition);
}
.feature-card:hover {
    border-color: rgba(232, 137, 60, 0.3);
    transform: translateY(-4px);
    box-shadow: var(--shadow-card);
}
.feature-card:hover::before {
    opacity: 1;
}

.feature-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-md);
    background: var(--color-accent-glow);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
    color: var(--color-accent);
}

.feature-card h4 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}
.feature-card p {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    margin-bottom: 0;
}

/* --- Screenshot Showcase --- */
.showcase-section {
    padding: 100px 0;
    background: var(--color-bg-alt);
    overflow: hidden;
}

.showcase-grid {
    display: flex;
    gap: 24px;
    justify-content: center;
    flex-wrap: wrap;
}

.showcase-phone {
    width: 200px;
    flex-shrink: 0;
    border-radius: 28px;
    overflow: hidden;
    box-shadow: var(--shadow-card);
    transition: var(--transition);
    border: 1px solid var(--color-border);
}
.showcase-phone:hover {
    transform: translateY(-8px) scale(1.03);
    box-shadow: 0 16px 60px rgba(0, 0, 0, 0.5);
    border-color: rgba(232, 137, 60, 0.3);
}
.showcase-phone img {
    width: 100%;
    display: block;
}
.showcase-caption {
    text-align: center;
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-top: 12px;
    font-weight: 500;
}

/* --- Feature Highlight (alternating image+text) --- */
.highlight-section {
    padding: 100px 0;
}
.highlight-section.alt-bg {
    background: var(--color-bg-alt);
}

.highlight-phone {
    max-width: 300px;
    margin: 0 auto;
    border-radius: 36px;
    overflow: hidden;
    box-shadow: var(--shadow-card), var(--shadow-glow);
    border: 1px solid var(--color-border);
}
.highlight-phone img {
    width: 100%;
    display: block;
}

.highlight-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    height: 100%;
}
.highlight-content h3 {
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    font-weight: 800;
    margin-bottom: 1rem;
}
.highlight-content p {
    color: var(--color-text-muted);
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    line-height: 1.8;
}
.highlight-content .check-list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.highlight-content .check-list li {
    padding: 8px 0;
    color: var(--color-text);
    font-size: 1rem;
    display: flex;
    align-items: center;
    gap: 12px;
}
.highlight-content .check-list li i {
    color: var(--color-accent);
    font-size: 1.1rem;
    flex-shrink: 0;
}

/* --- Languages Section --- */
.languages-section {
    padding: 80px 0;
    background: var(--color-bg-alt);
}
.language-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 50px;
    padding: 10px 22px;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text);
    transition: var(--transition);
    margin: 6px;
}
.language-pill:hover {
    border-color: var(--color-accent);
    background: var(--color-surface-2);
    transform: translateY(-2px);
}
.language-pill .flag {
    font-size: 1.3rem;
}

/* --- CTA Section --- */
.cta-section {
    padding: 100px 0;
    position: relative;
    overflow: hidden;
    text-align: center;
}
.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 800px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--color-accent-glow) 0%, transparent 60%);
    filter: blur(80px);
    z-index: 0;
}
.cta-content {
    position: relative;
    z-index: 1;
}
.cta-section h2 {
    font-size: clamp(2rem, 5vw, 3.2rem);
    font-weight: 900;
    margin-bottom: 1.5rem;
}
.cta-section p {
    color: var(--color-text-muted);
    font-size: 1.15rem;
    max-width: 550px;
    margin: 0 auto 2.5rem;
}

/* App Store Button */
.app-store-badge {
    display: inline-block;
    transition: var(--transition);
}
.app-store-badge:hover {
    transform: translateY(-2px);
    filter: brightness(1.1);
}
.app-store-badge img {
    height: 54px;
}

/* --- Footer --- */
.footer-section {
    padding: 60px 0 30px;
    border-top: 1px solid var(--color-border);
    background: var(--color-bg-alt);
}
.footer-brand {
    font-weight: 800;
    font-size: 1.2rem;
    color: var(--color-white);
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 0.75rem;
}
.footer-desc {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    max-width: 300px;
}
.footer-title {
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--color-white);
    margin-bottom: 1.2rem;
}
.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}
.footer-links li {
    margin-bottom: 0.6rem;
}
.footer-links a {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    transition: var(--transition);
}
.footer-links a:hover {
    color: var(--color-accent);
    padding-left: 4px;
}

.footer-bottom {
    border-top: 1px solid var(--color-border);
    padding-top: 1.5rem;
    margin-top: 3rem;
    text-align: center;
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

/* --- Page Headers (subpages) --- */
.page-header {
    padding: 140px 0 60px;
    background: var(--color-bg-alt);
    border-bottom: 1px solid var(--color-border);
    text-align: center;
    position: relative;
    overflow: hidden;
}
.page-header::before {
    content: '';
    position: absolute;
    top: -200px;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--color-accent-glow) 0%, transparent 60%);
    filter: blur(80px);
    z-index: 0;
}
.page-header h1 {
    position: relative;
    z-index: 1;
    font-size: clamp(2.2rem, 5vw, 3.5rem);
    font-weight: 900;
    margin-bottom: 0.75rem;
}
.page-header p {
    position: relative;
    z-index: 1;
    color: var(--color-text-muted);
    font-size: 1.15rem;
}

/* --- Content Sections (subpages) --- */
.content-section {
    padding: 80px 0;
}
.content-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 3rem;
    margin-bottom: 2rem;
}
.content-card h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--color-accent);
}
.content-card h3 {
    font-size: 1.2rem;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
}
.content-card p,
.content-card li {
    color: var(--color-text-muted);
    line-height: 1.8;
}
.content-card ul {
    padding-left: 1.2rem;
}
.content-card ul li {
    margin-bottom: 0.5rem;
}
.content-card a {
    color: var(--color-accent);
}
.content-card a:hover {
    text-decoration: underline;
}

/* --- Contact Form --- */
.contact-form .form-control,
.contact-form .form-select {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    color: var(--color-text);
    border-radius: var(--radius-sm);
    padding: 14px 18px;
    font-size: 1rem;
    transition: var(--transition);
}
.contact-form .form-control:focus,
.contact-form .form-select:focus {
    background: var(--color-surface-2);
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-glow);
    color: var(--color-text);
}
.contact-form .form-control::placeholder {
    color: var(--color-text-muted);
}
.contact-form .form-label {
    color: var(--color-text);
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}
.contact-form textarea {
    min-height: 150px;
    resize: vertical;
}
.contact-info-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    height: 100%;
}
.contact-info-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 1.25rem 0;
    border-bottom: 1px solid var(--color-border);
}
.contact-info-item:last-child {
    border-bottom: none;
}
.contact-info-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    background: var(--color-accent-glow);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-accent);
    font-size: 1.2rem;
    flex-shrink: 0;
}
.contact-info-item h5 {
    font-size: 1rem;
    margin-bottom: 0.25rem;
}
.contact-info-item p {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    margin-bottom: 0;
}

/* --- Animations --- */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

.fade-in-left {
    opacity: 0;
    transform: translateX(-30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.fade-in-right {
    opacity: 0;
    transform: translateX(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

/* --- Floating animation for phones --- */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50%      { transform: translateY(-12px); }
}
.floating {
    animation: float 5s ease-in-out infinite;
}

/* --- Responsive --- */
@media (max-width: 991px) {
    .hero-phone-container {
        margin-top: 3rem;
    }
    .phone-mockup {
        width: 240px;
    }
    .phone-mockup-secondary {
        width: 180px;
    }
    .phone-mockup-secondary.left {
        left: -40px;
    }
    .phone-mockup-secondary.right {
        right: -40px;
    }
    .showcase-phone {
        width: 160px;
    }
}

@media (max-width: 767px) {
    .hero-section {
        padding: 100px 0 60px;
        text-align: center;
    }
    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }
    .hero-buttons {
        justify-content: center;
    }
    .phone-mockup-secondary {
        display: none;
    }
    .phone-mockup {
        width: 220px;
    }
    .showcase-phone {
        width: 140px;
    }
    .highlight-phone {
        max-width: 240px;
        margin-bottom: 2rem;
    }
    .content-card {
        padding: 2rem 1.5rem;
    }
    .stat-number {
        font-size: 2rem;
    }
}

@media (max-width: 575px) {
    .showcase-phone {
        width: 120px;
        border-radius: 20px;
    }
    .language-pill {
        font-size: 0.85rem;
        padding: 8px 16px;
    }
}

/* --- Utility --- */
.gap-row-lg > [class*="col"] {
    margin-bottom: 2rem;
}

/* Back to top button */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--color-accent);
    color: var(--color-white);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
    cursor: pointer;
    box-shadow: 0 4px 20px var(--color-accent-glow);
}
.back-to-top.show {
    opacity: 1;
    visibility: visible;
}
.back-to-top:hover {
    background: var(--color-accent-dark);
    transform: translateY(-3px);
}

/* --- Lock screen widget showcase --- */
.widget-showcase {
    max-width: 280px;
    margin: 0 auto;
    border-radius: 36px;
    overflow: hidden;
    box-shadow: var(--shadow-card);
    border: 1px solid var(--color-border);
}
.widget-showcase img {
    width: 100%;
    display: block;
}