/* ==========================================================================
   PixelCraft Studio — CSS с прижатым футером внизу экрана
   ========================================================================== */

:root {
    --primary: #6366f1;           /* indigo-500 */
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #10b981;         /* emerald-500 */
    --dark: #111827;
    --gray: #6b7280;
    --light: #f9fafb;
    --white: #ffffff;

    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);

    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    height: 100%;
}

body {
    min-height: 100vh;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--light);
    color: var(--dark);
    line-height: 1.6;

    /* Flex-контейнер для прижатия футера */
    display: flex;
    flex-direction: column;
}

/* Основной контент растягивается и занимает всё доступное пространство */
main {
    flex: 1 0 auto;
}

/* Навигация */
.navbar {
    background: linear-gradient(135deg, var(--dark) 0%, #1f2937 100%);
    box-shadow: var(--shadow);
    padding: 1rem 0;
}

.navbar-brand {
    font-weight: 800;
    font-size: 1.75rem;
    letter-spacing: -0.025em;
    color: var(--primary-light) !important;
    transition: var(--transition);
}

.navbar-brand:hover {
    color: var(--white) !important;
    transform: scale(1.03);
}

.nav-link {
    font-weight: 500;
    color: #d1d5db !important;
    transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--white) !important;
    transform: translateY(-1px);
}

/* Hero / Главный баннер */
.hero {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 8rem 1rem 6rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 30% 70%, rgba(255,255,255,0.12) 0%, transparent 50%);
    pointer-events: none;
}

.hero h1 {
    font-size: clamp(2.8rem, 8vw, 4.8rem);
    font-weight: 800;
    letter-spacing: -0.04em;
    margin-bottom: 1.25rem;
    text-shadow: 0 4px 12px rgba(0,0,0,0.25);
}

.hero .lead {
    font-size: 1.35rem;
    max-width: 720px;
    margin: 0 auto 2.5rem;
    opacity: 0.95;
}

/* Карточки */
.card {
    border: none;
    border-radius: 1rem;
    overflow: hidden;
    background: white;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.card-title {
    font-weight: 700;
    color: var(--dark);
}

/* Кнопки */
.btn-primary {
    background: var(--primary);
    border-color: var(--primary);
    font-weight: 600;
    padding: 0.75rem 1.75rem;
    border-radius: 0.75rem;
    transition: var(--transition);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(99,102,241,0.3);
}

.btn-outline-primary {
    border-color: var(--primary);
    color: var(--primary);
    font-weight: 600;
}

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

/* Футер */
footer {
    flex-shrink: 0;
    background: var(--dark);
    color: #9ca3af;
    padding: 4rem 0 2rem;
    margin-top: auto;           /* ← дополнительная страховка */
}

footer a {
    color: #d1d5db;
    text-decoration: none;
    transition: var(--transition);
}

footer a:hover {
    color: var(--primary-light);
}

.hover-lift {
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.hover-lift:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 25px -5px rgba(0,0,0,0.1), 0 10px 10px -5px rgba(0,0,0,0.04) !important;
}

.drop-shadow-lg {
    text-shadow: 0 10px 20px rgba(0,0,0,0.35);
}

.py-9 { padding-top: 7rem !important; padding-bottom: 7rem !important; }
.py-8  { padding-top: 6rem !important; padding-bottom: 6rem !important; }