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

:root {
    --primary-color: #1e88e5;
    --secondary-color: #26a69a;
    --accent-color: #ff6f00;
    --light-bg: #f5f5f5;
    --dark-text: #333333;
    --light-text: #666666;
    --border-radius: 8px;
    --transition: 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--dark-text);
    line-height: 1.6;
    background-color: #ffffff;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.navbar {
    background-color: #ffffff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    font-size: 24px;
    font-weight: bold;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--dark-text);
    font-weight: 500;
    transition: color var(--transition);
}

.nav-links a:hover {
    color: var(--primary-color);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 80px 0;
    text-align: center;
}

.hero .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
}

.hero-content {
    flex: 1;
    text-align: left;
}

.hero h1 {
    font-size: 48px;
    margin-bottom: 16px;
    font-weight: 700;
}

.hero p {
    font-size: 20px;
    margin-bottom: 8px;
    opacity: 0.95;
}

.hero .subtitle {
    font-size: 16px;
    opacity: 0.85;
    margin-bottom: 24px;
}

.hero-icon {
    flex: 1;
    font-size: 150px;
    opacity: 0.3;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: var(--border-radius);
    border: none;
    text-decoration: none;
    font-weight: 600;
    cursor: pointer;
    transition: transform var(--transition), box-shadow var(--transition);
}

.btn:hover:not(.btn-disabled) {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

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

.btn-primary:hover {
    background-color: #e65100;
}

.btn-disabled {
    background-color: #cccccc;
    color: #999999;
    cursor: not-allowed;
}

/* Sections */
section {
    padding: 60px 0;
}

section h2 {
    font-size: 36px;
    margin-bottom: 40px;
    text-align: center;
    color: var(--dark-text);
}

/* Features Section */
.features {
    background-color: var(--light-bg);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.feature-card {
    background-color: white;
    padding: 30px;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    transition: transform var(--transition), box-shadow var(--transition);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.12);
}

.feature-card i {
    font-size: 40px;
    color: var(--primary-color);
    margin-bottom: 16px;
}

.feature-card h3 {
    font-size: 18px;
    margin-bottom: 12px;
    color: var(--dark-text);
}

.feature-card p {
    color: var(--light-text);
    font-size: 14px;
}

/* About Section */
.about {
    background-color: white;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
}

.about-text h3 {
    font-size: 20px;
    margin-top: 24px;
    margin-bottom: 12px;
    color: var(--primary-color);
}

.about-text h3:first-child {
    margin-top: 0;
}

.about-text p {
    color: var(--light-text);
    margin-bottom: 12px;
}

.about-text ul {
    margin-left: 20px;
    color: var(--light-text);
}

.about-text li {
    margin-bottom: 8px;
}

.about-stats {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

.stat {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 24px;
    border-radius: var(--border-radius);
    text-align: center;
}

.stat h3 {
    font-size: 24px;
    margin-bottom: 8px;
}

.stat p {
    font-size: 14px;
    opacity: 0.9;
}

/* Download Section */
.download {
    background-color: var(--light-bg);
}

.download-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.download-card {
    background-color: white;
    padding: 30px;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.download-card i {
    font-size: 60px;
    color: var(--primary-color);
    margin-bottom: 16px;
}

.download-card h3 {
    font-size: 22px;
    margin-bottom: 12px;
}

.download-card p {
    color: var(--light-text);
    margin-bottom: 16px;
    font-size: 14px;
}

.download-card.coming-soon {
    opacity: 0.6;
}

.file-info {
    font-size: 12px;
    color: var(--light-text);
    margin-top: 12px;
}

.installation-guide {
    background-color: white;
    padding: 30px;
    border-radius: var(--border-radius);
    max-width: 600px;
    margin: 0 auto;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.installation-guide h3 {
    font-size: 20px;
    margin-bottom: 16px;
    color: var(--primary-color);
}

.installation-guide ol {
    margin-left: 20px;
    color: var(--light-text);
}

.installation-guide li {
    margin-bottom: 12px;
}

/* Vote History Section */
.votes-history {
    background-color: #ffffff;
}

.vote-history-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
}

.vote-history-controls label {
    font-weight: 600;
    color: var(--dark-text);
}

.vote-history-controls select {
    border: 1px solid #c7d8e8;
    border-radius: 6px;
    padding: 8px 10px;
    min-width: 180px;
    font-size: 14px;
    color: var(--dark-text);
}

.friends-preview {
    padding: 70px 0;
    text-align: center;
    background: linear-gradient(180deg, #f4fbff 0%, #eaf4ff 100%);
}

.friends-preview h2 {
    color: var(--primary-color);
    margin-bottom: 10px;
}

.friends-preview p {
    color: var(--light-text);
    margin-bottom: 20px;
}

/* Moderator Boards */
.moderator-boards {
    background: linear-gradient(180deg, #f8fbff 0%, #eef6ff 100%);
}

.moderator-subtitle {
    text-align: center;
    color: var(--light-text);
    margin: -28px auto 26px auto;
    max-width: 760px;
}

.board-auth-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    background: white;
    border: 1px solid #dbe8f5;
    border-radius: 12px;
    padding: 14px 16px;
    margin-bottom: 18px;
}

.board-auth-copy p {
    color: var(--light-text);
    font-size: 14px;
    margin-top: 4px;
}

.board-auth-status {
    display: inline-block;
    font-weight: 700;
    color: var(--primary-color);
}

.board-auth-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.board-logout {
    min-width: 90px;
}

.board-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 18px;
}

.board-card {
    background: white;
    border-radius: 14px;
    padding: 16px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    border: 1px solid #dbe8f5;
}

.board-card-warning {
    border-top: 4px solid #d32f2f;
}

.board-card-info {
    border-top: 4px solid var(--primary-color);
}

.board-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 12px;
}

.board-card-header h3 {
    font-size: 20px;
    color: var(--dark-text);
    margin-bottom: 4px;
}

.board-card-header p {
    font-size: 13px;
    color: var(--light-text);
}

.board-card-body {
    display: grid;
    gap: 8px;
    min-height: 106px;
}

.board-entry {
    background: #f8fbff;
    border: 1px solid #e5eef8;
    border-radius: 10px;
    padding: 10px;
}

.board-entry header {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 6px;
}

.board-entry strong {
    color: var(--primary-color);
}

.board-entry span {
    color: var(--light-text);
    font-size: 12px;
}

.board-entry p {
    margin: 0;
    font-size: 14px;
    color: var(--dark-text);
}

.board-post-box {
    margin-top: 12px;
    background: #f7fbff;
    border: 1px solid #dbe8f5;
    border-radius: 10px;
    padding: 12px;
}

.board-message-input {
    width: 100%;
    border: 1px solid #c7d8e8;
    border-radius: 8px;
    padding: 10px;
    font: inherit;
    resize: vertical;
    margin-bottom: 10px;
}

.board-post-actions {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
}

.board-status {
    font-size: 13px;
    color: var(--light-text);
}

.board-empty {
    border: 1px dashed #d0dceb;
    border-radius: 10px;
    padding: 14px;
    color: var(--light-text);
    text-align: center;
    background: #fbfdff;
}

.board-role-lock {
    font-size: 13px;
    color: var(--light-text);
    margin-top: 8px;
}
.vote-history-status {
    text-align: center;
    color: var(--light-text);
    font-size: 14px;
    margin-bottom: 16px;
}

.vote-history-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 16px;
}

.vote-history-card {
    background-color: #f8fbff;
    border: 1px solid #dbe8f5;
    border-radius: 10px;
    padding: 14px;
}

.vote-history-card h3 {
    color: var(--primary-color);
    margin-bottom: 10px;
    font-size: 18px;
}

.vote-history-list {
    display: grid;
    gap: 8px;
}

.vote-row {
    display: grid;
    grid-template-columns: 1fr auto auto;
    gap: 10px;
    align-items: center;
    background: white;
    border-radius: 8px;
    border: 1px solid #edf2f8;
    padding: 8px 10px;
}

.vote-date {
    font-size: 13px;
    color: var(--light-text);
}

.vote-positive {
    color: #2e7d32;
    font-weight: 700;
}

.vote-negative {
    color: #d32f2f;
    font-weight: 700;
}

.vote-empty {
    color: var(--light-text);
    font-size: 13px;
}

.note {
    background-color: #fff3cd;
    border-left: 4px solid var(--accent-color);
    padding: 12px;
    margin-top: 16px;
    border-radius: 4px;
    font-size: 14px;
    color: #856404;
}

/* Changelog Section */
.changelog {
    background-color: white;
}

.changelog-items {
    display: grid;
    gap: 24px;
    max-width: 800px;
    margin: 0 auto;
}

.changelog-item {
    background-color: var(--light-bg);
    padding: 24px;
    border-radius: var(--border-radius);
    border-left: 4px solid var(--primary-color);
}

.version {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary-color);
}

.date {
    font-size: 13px;
    color: var(--light-text);
    margin-bottom: 12px;
}

.changelog-item h4 {
    font-size: 16px;
    margin-bottom: 12px;
    color: var(--dark-text);
}

.changelog-item ul {
    margin-left: 20px;
    color: var(--light-text);
}

.changelog-item li {
    margin-bottom: 6px;
    font-size: 14px;
}

/* Footer */
.footer {
    background-color: #2c3e50;
    color: white;
    padding: 40px 0 20px 0;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 30px;
}

.footer-section h4 {
    font-size: 16px;
    margin-bottom: 12px;
}

.footer-section p {
    font-size: 14px;
    opacity: 0.8;
    line-height: 1.6;
}

.footer-section ul {
    list-style: none;
}

.footer-section a {
    color: white;
    text-decoration: none;
    font-size: 14px;
    opacity: 0.8;
    transition: opacity var(--transition);
}

.footer-section a:hover {
    opacity: 1;
}

.footer-section li {
    margin-bottom: 8px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 20px;
    text-align: center;
    font-size: 13px;
    opacity: 0.8;
}

.footer-bottom p {
    margin-bottom: 4px;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        gap: 1rem;
    }
    
    .hero .container {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-content {
        text-align: center;
    }
    
    .hero h1 {
        font-size: 32px;
    }
    
    .hero p {
        font-size: 16px;
    }
    
    .hero-icon {
        font-size: 100px;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }

    .board-auth-row {
        flex-direction: column;
        align-items: flex-start;
    }

    .board-auth-actions {
        justify-content: flex-start;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    section h2 {
        font-size: 28px;
    }
}

@media (max-width: 480px) {
    .nav-links {
        gap: 0.5rem;
        font-size: 14px;
    }
    
    .logo {
        font-size: 18px;
    }
    
    .hero h1 {
        font-size: 24px;
    }
    
    .btn {
        padding: 10px 16px;
        font-size: 14px;
    }
}

/* Friends comments page */
.friends-comments-section {
    padding: 60px 0;
    background: linear-gradient(180deg, #f8fbff 0%, #ffffff 100%);
    min-height: calc(100vh - 80px);
}

.friends-comments-section h1 {
    text-align: center;
    margin-bottom: 8px;
    color: var(--primary-color);
}

.friends-subtitle {
    text-align: center;
    color: var(--light-text);
    margin-bottom: 20px;
}

.friends-controls {
    max-width: 680px;
    margin: 0 auto 16px auto;
    display: flex;
    align-items: center;
    gap: 10px;
}

.friends-controls label {
    font-weight: 600;
    color: var(--dark-text);
}

.friends-controls select {
    border: 1px solid #c7d8e8;
    border-radius: 6px;
    padding: 8px 10px;
    min-width: 190px;
}

.friends-form-card {
    max-width: 680px;
    margin: 0 auto;
    background: white;
    border-radius: 10px;
    border: 1px solid #dbe8f5;
    padding: 14px;
}

.friends-form-row {
    display: grid;
    gap: 6px;
    margin-bottom: 10px;
}

.friends-form-row label {
    font-weight: 600;
    color: var(--dark-text);
}

.friends-form-row input,
.friends-form-row textarea {
    border: 1px solid #c7d8e8;
    border-radius: 6px;
    padding: 10px;
    font: inherit;
}

.friends-form-actions {
    display: flex;
    gap: 10px;
}

.friends-status {
    margin-top: 8px;
    font-size: 14px;
    color: var(--light-text);
}

.friends-list {
    max-width: 680px;
    margin: 16px auto 0 auto;
    display: grid;
    gap: 10px;
}

.friends-comment-card {
    background: white;
    border: 1px solid #e5eef8;
    border-radius: 10px;
    padding: 12px;
}

.friends-comment-card header {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 6px;
}

.friends-comment-card strong {
    color: var(--primary-color);
}

.friends-comment-card span {
    color: var(--light-text);
    font-size: 12px;
}

.friends-comment-location {
    font-size: 12px;
    color: #5b7488;
    margin-bottom: 6px;
}

.friends-comment-card p {
    margin: 0;
    color: var(--dark-text);
}

.friends-empty {
    background: white;
    border: 1px dashed #d0dceb;
    border-radius: 10px;
    color: var(--light-text);
    padding: 16px;
    text-align: center;
}