/* CyDefend Pro - Main Stylesheet */
/* Optimized and centered version */

/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Light theme variables */
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary-color: #10b981;
    --accent-color: #8b5cf6;
    --text-color: #1f2937;
    --text-light: #6b7280;
    --bg-color: #f9fafb;
    --bg-secondary: #ffffff;
    --border-color: #e5e7eb;
    --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 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --gradient: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    --radius: 12px;
}

.dark-theme {
    /* Dark theme variables */
    --primary-color: #3b82f6;
    --primary-dark: #60a5fa;
    --secondary-color: #10b981;
    --accent-color: #a78bfa;
    --text-color: #f9fafb;
    --text-light: #d1d5db;
    --bg-color: #111827;
    --bg-secondary: #1f2937;
    --border-color: #374151;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
    --gradient: linear-gradient(135deg, var(--primary-color), var(--accent-color));
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: var(--transition);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(37, 99, 235, 0.05) 0%, transparent 20%),
        radial-gradient(circle at 90% 80%, rgba(139, 92, 246, 0.05) 0%, transparent 20%);
}

.container {
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    animation: fadeIn 0.8s ease-out;
}

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

/* Header styles */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    margin-bottom: 60px;
    border-bottom: 1px solid var(--border-color);
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    transition: var(--transition);
}

.logo-container:hover {
    transform: translateX(-5px);
}

.logo {
    height: 45px;
    width: auto;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.logo-text {
    font-size: 1.8rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    background: var(--gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.logo-highlight {
    color: var(--secondary-color);
    font-weight: 700;
}

.controls {
    display: flex;
    align-items: center;
    gap: 15px;
}

/* Language switcher */
.language-switcher {
    position: relative;
}

.language-btn {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 10px 16px;
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    font-weight: 600;
    color: var(--text-color);
    transition: var(--transition);
    box-shadow: var(--shadow);
    min-width: 100px;
    justify-content: space-between;
}

.language-btn:hover {
    background: var(--gradient);
    color: white;
    border-color: transparent;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.language-btn:hover .fa-globe,
.language-btn:hover .fa-chevron-down {
    color: white;
}

.language-btn .fa-globe {
    font-size: 1rem;
    color: var(--text-light);
    transition: var(--transition);
}

.language-btn #currentLanguage {
    font-weight: 700;
    letter-spacing: 0.5px;
    min-width: 28px;
    text-align: center;
    display: inline-block;
}

.language-btn .fa-chevron-down {
    font-size: 0.75rem;
    color: var(--text-light);
    transition: var(--transition);
}

.language-btn.loading {
    justify-content: center;
}

.language-btn .fa-spinner {
    animation: spin 1s linear infinite;
    font-size: 1.1rem;
    color: var(--primary-color);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.language-dropdown {
    position: absolute;
    top: calc(100% + 5px);
    right: 0;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 8px 0;
    min-width: 160px;
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
}

.language-dropdown.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.language-option {
    padding: 12px 20px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-color);
    font-weight: 500;
}

.language-option:hover {
    background-color: rgba(37, 99, 235, 0.1);
    color: var(--primary-color);
}

.language-option .flag {
    font-size: 1.2rem;
}

/* Theme toggle */
.theme-toggle {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    width: 43px;
    height: 39px;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

.theme-toggle:hover {
    background: var(--gradient);
    border-color: transparent;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.theme-toggle i {
    position: absolute;
    transition: var(--transition);
    font-size: 1.3rem;
}

.theme-toggle .fa-sun {
    color: #f59e0b;
    opacity: 0;
    transform: translateY(20px);
}

.theme-toggle .fa-moon {
    color: var(--text-color);
    opacity: 1;
    transform: translateY(0);
}

.dark-theme .theme-toggle .fa-sun {
    opacity: 1;
    transform: translateY(0);
}

.dark-theme .theme-toggle .fa-moon {
    opacity: 0;
    transform: translateY(-20px);
}

.theme-toggle:hover .fa-moon,
.theme-toggle:hover .fa-sun {
    color: white;
}

/* Main content */
.main-content {
    display: flex;
    flex-direction: column;
    gap: 80px;
}

/* Hero section */
.hero-section {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-title {
    font-size: 4rem;
    font-weight: 900;
    margin-bottom: 20px;
    background: var(--gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    line-height: 1.1;
    letter-spacing: -1px;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.hero-subtitle {
    font-size: 1.8rem;
    font-weight: 500;
    color: var(--text-light);
    margin-bottom: 50px;
    letter-spacing: -0.5px;
}

/* Countdown */
.countdown-container {
    margin: 50px 0;
    padding: 40px;
    background: var(--bg-secondary);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
    text-align: center;
}

.countdown-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient);
}

.countdown-title {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 30px;
    color: var(--text-light);
}

.countdown {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.countdown-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: var(--gradient);
    border-radius: calc(var(--radius) - 2px);
    padding: 25px 20px;
    min-width: 110px;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.countdown-item::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transform: translateX(-100%);
}

.countdown-item:hover::after {
    animation: shine 1s ease-out;
}

@keyframes shine {
    100% { transform: translateX(100%); }
}

.countdown-value {
    font-size: 3rem;
    font-weight: 800;
    font-family: 'JetBrains Mono', monospace;
    color: white;
    line-height: 1;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease;
}

.countdown-label {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.9);
    margin-top: 8px;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    font-weight: 600;
}

.countdown-separator {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-color);
    margin: 0 10px;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.hero-description {
    font-size: 1.2rem;
    line-height: 1.8;
    color: var(--text-light);
    max-width: 800px;
    margin: 0 auto;
    padding: 30px;
    background: var(--bg-secondary);
    border-radius: var(--radius);
    border-left: 4px solid var(--secondary-color);
}

/* Tech stack - CENTERED */
.tech-stack {
    text-align: center;
}

.section-title {
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: 40px;
    color: var(--text-color);
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--gradient);
    border-radius: 2px;
}

.tech-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 25px;
    max-width: 1000px;
    margin: 0 auto;
}

.tech-item {
    background-color: var(--bg-secondary);
    border-radius: var(--radius);
    padding: 25px 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    transition: var(--transition);
    box-shadow: var(--shadow);
    border: 2px solid transparent;
    width: 160px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.tech-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.tech-item:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg);
}

.tech-item:hover::before {
    transform: scaleX(1);
}

.tech-item i {
    font-size: 3rem;
    color: var(--primary-color);
    transition: var(--transition);
}

.tech-item:hover i {
    transform: scale(1.2);
    color: var(--accent-color);
}

.tech-item span {
    font-weight: 700;
    color: var(--text-color);
    font-size: 1.1rem;
}

/* Contact section - CENTERED */
.contact-section {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
    width: 100%;
}

.contact-description {
    color: var(--text-light);
    margin-bottom: 40px;
    line-height: 1.8;
    font-size: 1.1rem;
    text-align: center;
}

.contact-form {
    background-color: var(--bg-secondary);
    border-radius: var(--radius);
    padding: 50px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
    margin: 0 auto;
}

.contact-form::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient);
}

.form-group {
    margin-bottom: 30px;
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: 12px;
    font-weight: 600;
    color: var(--text-color);
    font-size: 1.1rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 18px 20px;
    border: 2px solid var(--border-color);
    border-radius: calc(var(--radius) - 4px);
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: 'Inter', sans-serif;
    font-size: 1.1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
    background-color: var(--bg-secondary);
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

/* repeate_name field */
.repeate_name {
    position: absolute;
    left: -9999px;
    opacity: 0;
    height: 0;
    width: 0;
    overflow: hidden;
}

.submit-btn {
    background: var(--gradient);
    color: white;
    border: none;
    border-radius: calc(var(--radius) - 4px);
    padding: 20px 40px;
    font-size: 1.2rem;
    font-weight: 700;
    cursor: pointer;
    width: 100%;
    transition: var(--transition);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    position: relative;
    overflow: hidden;
}

.submit-btn::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 ease;
}

.submit-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(37, 99, 235, 0.3);
}

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

.submit-btn:active {
    transform: translateY(-1px);
}

.submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

/* Form message */
.form-message {
    margin-top: 25px;
    padding: 20px;
    border-radius: calc(var(--radius) - 4px);
    text-align: center;
    font-weight: 600;
    font-size: 1.1rem;
    display: none;
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.form-message.success {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(16, 185, 129, 0.05));
    color: #10b981;
    border: 2px solid rgba(16, 185, 129, 0.3);
    display: block;
}

.form-message.error {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.1), rgba(239, 68, 68, 0.05));
    color: #ef4444;
    border: 2px solid rgba(239, 68, 68, 0.3);
    display: block;
}

/* Footer */
.footer {
    text-align: center;
    padding: 50px 0 30px;
    margin-top: 80px;
    border-top: 1px solid var(--border-color);
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: var(--gradient);
    border-radius: 2px;
}

.copyright {
    color: var(--text-light);
    margin-bottom: 15px;
    font-size: 1.1rem;
}

.experience {
    color: var(--secondary-color);
    font-weight: 700;
    font-size: 1.2rem;
    padding: 10px 25px;
    background: rgba(16, 185, 129, 0.1);
    border-radius: 20px;
    display: inline-block;
}

/* Responsive adjustments */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 3.2rem;
    }
    
    .hero-subtitle {
        font-size: 1.5rem;
    }
    
    .countdown-item {
        min-width: 90px;
        padding: 20px 15px;
    }
    
    .countdown-value {
        font-size: 2.5rem;
    }
    
    .tech-item {
        width: 140px;
    }
}

@media (max-width: 768px) {
    body {
        padding: 15px;
    }
    
    .header {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
    
    .controls {
        width: 100%;
        justify-content: center;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .countdown {
        gap: 15px;
    }
    
    .countdown-item {
        min-width: 80px;
        padding: 15px 10px;
    }
    
    .countdown-value {
        font-size: 2rem;
    }
    
    .countdown-separator:nth-child(2),
    .countdown-separator:nth-child(4) {
        display: none;
    }
    
    .contact-form {
        padding: 30px 20px;
    }
    
    .tech-grid {
        max-width: 600px;
    }
    
    .tech-item {
        width: 150px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .countdown-item {
        min-width: 70px;
        padding: 12px 8px;
    }
    
    .countdown-value {
        font-size: 1.8rem;
    }
    
    .countdown-label {
        font-size: 0.8rem;
    }
    
    .tech-grid {
        justify-content: center;
    }
    
    .tech-item {
        width: 130px;
        padding: 20px 15px;
    }
    
    .contact-form {
        padding: 25px 15px;
    }
    
    .submit-btn {
        padding: 18px 20px;
        font-size: 1rem;
    }
}

/* Utility classes */
.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;
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-color);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}


/* Добавьте эти стили в существующий style.css */

/* Button loader styles */
.submit-btn {
    position: relative;
}

.submit-btn .btn-loader {
    display: none;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
    margin-left: 10px;
}

.submit-btn.loading {
    pointer-events: none;
}

.submit-btn.loading .btn-text {
    opacity: 0.7;
}

.submit-btn.loading .btn-loader {
    display: inline-block;
}

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

/* Form validation error styles */
.form-group input.invalid,
.form-group textarea.invalid {
    border-color: #ef4444 !important;
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1) !important;
}

.error-message {
    color: #ef4444;
    font-size: 0.9rem;
    margin-top: 5px;
    display: none;
}

.form-group.error .error-message {
    display: block;
}