/*
Theme Name: Народный уголь
Theme URI: https://domain.ru
Author: Development Team
Author URI: https://domain.ru
Description: Кастомная тема для сайта по продаже угля. Высокая конверсия, простота, доверие.
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: coal-theme
*/

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Manrope:wght@700;800&display=swap');

:root {
    --color-primary: #1F1F1F;
    --color-primary-light: #2A2A2A;
    --color-accent: #F59E0B;
    --color-accent-hover: #D97706;
    --color-text: #FFFFFF;
    --color-text-dark: #1B1B1B;
    --color-text-muted: #B8B3AA;
    --color-background: #FFFFFF;
    --color-background-alt: #F6F3EE;
    --color-success: #84CC16;
    --color-available: #84CC16;
    --color-error: #DC2626;
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Manrope', 'Inter', sans-serif;
    --font-size-xs: 12px;
    --font-size-sm: 16px;
    --font-size-base: 18px;
    --font-size-lg: 20px;
    --font-size-xl: 28px;
    --font-size-2xl: 40px;
    --font-size-3xl: 56px;
    --font-size-4xl: 64px;
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
    --spacing-2xl: 96px;
    --border-radius: 14px;
    --border-radius-lg: 20px;
    --transition: 0.28s ease;
    --shadow: 0 10px 30px rgba(17, 17, 17, 0.08);
    --shadow-lg: 0 20px 56px rgba(17, 17, 17, 0.16);
    --container-max: 1200px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text-dark);
    background-color: var(--color-background-alt);
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
}

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

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

a:hover {
    color: var(--color-accent-hover);
}

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

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 800;
    line-height: 1.08;
    letter-spacing: -0.04em;
    margin-bottom: var(--spacing-sm);
}

h1 { font-size: 56px; }
h2 { font-size: 40px; }
h3 { font-size: 28px; }
h4 { font-size: var(--font-size-xl); }

p {
    margin-bottom: var(--spacing-sm);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 58px;
    padding: 0 24px;
    font-size: 18px;
    font-weight: 700;
    text-align: center;
    border: none;
    border-radius: 16px;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    white-space: nowrap;
}

.btn-primary {
    background-color: var(--color-accent);
    color: #FFFFFF;
}

.btn-primary:hover {
    background-color: var(--color-accent-hover);
    color: #FFFFFF;
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-text);
    border: 1px solid rgba(255, 255, 255, 0.22);
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.08);
    color: var(--color-text);
}

.btn-large {
    min-height: 60px;
    padding: 0 30px;
    font-size: 18px;
}

.section {
    padding: var(--spacing-2xl) 0;
}

.section-dark {
    background-color: var(--color-primary);
    color: var(--color-text);
}

.section-light {
    background-color: var(--color-background-alt);
}

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

input[type="text"],
input[type="tel"],
input[type="email"],
input[type="url"],
input[type="password"],
textarea,
select {
    width: 100%;
    min-height: 56px;
    padding: 0 18px;
    font-size: 18px;
    font-family: var(--font-primary);
    border: 1px solid rgba(27, 27, 27, 0.14);
    border-radius: 14px;
    transition: var(--transition);
    background-color: #FFFFFF;
    color: var(--color-text-dark);
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(255, 140, 0, 0.2);
}

label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
    color: var(--color-text-dark);
}

.form-group {
    margin-bottom: var(--spacing-sm);
}

.form-error {
    color: var(--color-error);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-xs);
}

.form-success {
    color: var(--color-success);
    font-size: var(--font-size-base);
    padding: var(--spacing-md);
    background-color: rgba(39, 174, 96, 0.1);
    border-radius: var(--border-radius);
    text-align: center;
}

/* Mobile First Responsive */
@media (max-width: 768px) {
    :root {
        --font-size-2xl: 34px;
        --font-size-3xl: 38px;
        --font-size-4xl: 38px;
        --spacing-2xl: 48px;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .section {
        padding: var(--spacing-xl) 0;
    }
    
    h1 { font-size: 38px; }
    h2 { font-size: 34px; }
    h3 { font-size: 24px; }
    
    .btn-large {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-base);
    }
}

/* Sticky Mobile Button */
.mobile-sticky-buttons {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 12px 14px calc(12px + env(safe-area-inset-bottom));
    background: rgba(24, 24, 24, 0.94);
    backdrop-filter: blur(16px);
    z-index: 9999;
    gap: 10px;
    justify-content: center;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

@media (max-width: 768px) {
    .mobile-sticky-buttons {
        display: flex;
    }
    
    .mobile-sticky-buttons .btn {
        flex: 1;
        max-width: 50%;
        min-height: 54px;
        padding: 0 16px;
    }
}

/* Honeypot */
.honeypot-field {
    position: absolute;
    left: -9999px;
}

/* Loading */
.loading {
    position: relative;
    pointer-events: none;
    opacity: 0.7;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid #FFFFFF;
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}