/* ========================================
   3D PRINT STUDIO - ПРОДАЮЩИЙ ДИЗАЙН
   ======================================== */

:root {
    /* Продающие цвета */
    --primary: #FF6B00;
    --primary-dark: #E55A00;
    --primary-light: #FF8533;
    --secondary: #7C3AED;
    --accent: #00C4FF;
    --success: #10B981;
    --warning: #F59E0B;
    --danger: #EF4444;

    /* Серые */
    --white: #FFFFFF;
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;

    /* Размеры */
    --container: 1280px;
    --radius-sm: 8px;
    --radius: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* Тени */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow: 0 4px 6px -1px rgba(0,0,0,0.1);
    --shadow-md: 0 10px 15px -3px rgba(0,0,0,0.1);
    --shadow-lg: 0 20px 25px -5px rgba(0,0,0,0.15);
    --shadow-xl: 0 25px 50px -12px rgba(0,0,0,0.25);
    --shadow-glow: 0 0 30px rgba(255,107,0,0.3);

    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--gray-800);
    background: var(--white);
    line-height: 1.5;
}

.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
}

/* Продающая типографика */
h1, h2, h3, h4, h5, h6 {
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

h1 {
    font-size: 60px;
    margin-bottom: 24px;
    background: linear-gradient(135deg, var(--gray-900) 0%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

h2 {
    font-size: 42px;
    margin-bottom: 16px;
}

h3 {
    font-size: 24px;
    margin-bottom: 12px;
}

@media (max-width: 768px) {
    h1 { font-size: 38px; }
    h2 { font-size: 30px; }
    h3 { font-size: 22px; }
}

/* Продающие кнопки */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 700;
    border-radius: 50px;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--secondary) 0%, #6D28D9 100%);
    color: white;
}

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

.btn-outline:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-3px);
}

.btn-large {
    padding: 16px 40px;
    font-size: 18px;
}

.btn-block {
    width: 100%;
}

/* Продающие карточки */
.card {
    background: white;
    border-radius: var(--radius-lg);
    transition: var(--transition);
    position: relative;
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

/* Алерты */
.alert {
    max-width: var(--container);
    margin: 20px auto;
    padding: 16px 24px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    gap: 12px;
    animation: slideDown 0.5s ease;
}

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

.alert-success {
    background: linear-gradient(135deg, #D1FAE5, #A7F3D0);
    color: #065F46;
    border-left: 4px solid var(--success);
}

.alert-error {
    background: linear-gradient(135deg, #FEE2E2, #FECACA);
    color: #991B1B;
    border-left: 4px solid var(--danger);
}