:root {
    --primary: #007AFF;
    --primary-light: #4DA3FF;
    --primary-dark: #0056CC;
    --secondary: #5856D6;
    --accent: #FF9500;
    --success: #34C759;
    --dark: #1C1C1E;
    --gray-100: #F2F2F7;
    --gray-200: #E5E5EA;
    --gray-300: #D1D1D6;
    --gray-600: #8E8E93;
    --gray-800: #2C2C2E;
    --white: #FFFFFF;
    --gradient-hero: linear-gradient(135deg, #007AFF 0%, #5856D6 100%);
    --gradient-card: linear-gradient(145deg, rgba(0, 122, 255, 0.05) 0%, rgba(88, 86, 214, 0.05) 100%);
    --shadow-sm: 0 2px 8px rgba(0, 122, 255, 0.08);
    --shadow-md: 0 8px 24px rgba(0, 122, 255, 0.12);
    --shadow-lg: 0 16px 48px rgba(0, 122, 255, 0.15);
    --shadow-xl: 0 24px 64px rgba(0, 122, 255, 0.2);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: var(--dark);
    background: var(--gray-100);
    overflow-x: hidden;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: transparent;
    z-index: 1000;
    transition: all 0.3s ease;
    padding: 1.5rem 0;
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: center;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    transition: all 0.3s ease;
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 16px;
    box-shadow:
        0 4px 20px rgba(0, 0, 0, 0.15),
        0 2px 8px rgba(0, 0, 0, 0.1),
        inset 0 1px 2px rgba(255, 255, 255, 1);
}

.logo img {
    height: 50px;
    width: auto;
    transition: all 0.3s ease;
    filter: drop-shadow(0 2px 8px rgba(0, 122, 255, 0.3));
}

.logo:hover {
    transform: translateY(-2px);
    box-shadow:
        0 6px 25px rgba(0, 0, 0, 0.2),
        0 3px 10px rgba(0, 0, 0, 0.15),
        inset 0 1px 2px rgba(255, 255, 255, 1);
}

.logo:hover img {
    transform: scale(1.05);
    filter: drop-shadow(0 4px 12px rgba(0, 122, 255, 0.4));
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--gradient-hero);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: opacity 0.3s ease;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

/* Hide logo on scroll */
.header.hide-logo .logo {
    opacity: 0;
    visibility: hidden;
    transform: translateY(-20px);
    pointer-events: none;
}

/* On mobile, hide entire header when scrolling down */
@media (max-width: 768px) {
    .header.hide-logo {
        transform: translateY(-100%);
    }
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border: none;
    border-radius: 50%;
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 122, 255, 0.4);
    z-index: 9998;
    display: flex;
    align-items: center;
    justify-content: center;
}

.back-to-top.visible {
    opacity: 1 !important;
    visibility: visible !important;
    transform: translateY(0) !important;
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 20px rgba(0, 122, 255, 0.5);
}

.btn {
    padding: 0.75rem 1.5rem;
    border-radius: 12px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.btn-primary {
    background: var(--gradient-hero);
    color: var(--white);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Magazine Hero Sections */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(180deg, #2a2a3a 0%, #1a1a2a 100%);
    overflow: hidden;
    padding: 8rem 0 4rem;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    filter: brightness(0.45) saturate(1.1);
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 3rem;
    align-items: center;
}

.hero-content-reverse {
    grid-template-columns: 1.2fr 1fr;
}

.hero-content-reverse .hero-text {
    order: 2;
}

.hero-content-reverse .hero-image {
    order: 1;
}

.hero-text {
    color: rgba(255, 255, 255, 0.95);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(0, 122, 255, 0.2);
    border: 1px solid rgba(0, 122, 255, 0.3);
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--primary-light);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 1.5rem;
    backdrop-filter: blur(10px);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.hero-title span {
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.1rem;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 2rem;
}

.hero-features {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.hero-feature {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.8);
}

.hero-feature i {
    color: var(--accent);
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem;
}

.hero-image img {
    max-width: 100%;
    height: auto;
    max-height: 70vh;
    object-fit: contain;
    filter: brightness(1.15) contrast(1.05) drop-shadow(0 20px 40px rgba(0, 0, 0, 0.4));
    transition: all 0.4s ease;
}

.hero-image:hover img {
    filter: brightness(1.2) contrast(1.08) drop-shadow(0 30px 60px rgba(0, 0, 0, 0.5));
    transform: scale(1.02);
}

/* Modal Popup */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    z-index: 9999;
    animation: fadeIn 0.3s ease;
}

.modal.active {
    display: flex;
    justify-content: center;
    align-items: center;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    position: relative;
    width: 95vw;
    height: 90vh;
    max-width: 1400px;
    background: #000;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.modal-header {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 60px;
    background: linear-gradient(180deg, rgba(0,0,0,0.8) 0%, transparent 100%);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
    z-index: 10;
}

.modal-title {
    color: white;
    font-size: 1.2rem;
    font-weight: 600;
}

.modal-close {
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: white;
    font-size: 1.5rem;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: rotate(90deg);
}

.modal-iframe {
    width: 100%;
    height: 100%;
    border: none;
}

/* Responsive */
@media (max-width: 1024px) {
    .header-content {
        padding: 1rem 1.5rem;
    }

    .hero-content {
        grid-template-columns: 1fr !important;
        text-align: center;
        padding: 0 1.5rem;
    }

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

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

    .hero-image {
        padding: 2rem 1rem;
    }

    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
        font-size: 1rem;
    }

    .modal-content {
        width: 100vw;
        height: 100vh;
        border-radius: 0;
    }

    .modal-title {
        font-size: 1rem;
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .hero-section {
        padding: 7rem 0 3rem;
    }

    .hero-image img {
        max-height: 50vh;
    }

    .logo-text {
        font-size: 1.2rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-section {
        padding: 6rem 0 2rem;
    }

    .hero-features {
        flex-direction: column;
        gap: 0.75rem;
    }

    .hero-image {
        padding: 1.5rem 0.5rem;
    }

    .hero-image img {
        max-height: 40vh;
    }

    .hero-badge {
        font-size: 0.75rem;
        padding: 0.5rem 1rem;
    }

    .logo img {
        height: 40px;
    }

    .logo-text {
        font-size: 1rem;
    }

    .back-to-top {
        bottom: 15px;
        right: 15px;
        width: 40px;
        height: 40px;
    }
}