/* Glass Clean Theme - Common Styles */

/* CSS Variables for consistent theming */
:root {
    --primary-color: #2563eb;
    --primary-gradient: linear-gradient(135deg, #2563eb, #1d4ed8);
    --secondary-color: #f59e0b;
    --text-dark: #1f2937;
    --text-light: #6b7280;
    --surface: #ffffff;
    --surface-light: #f8fafc;
    --border-light: #e5e7eb;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --radius: 1rem;
    --radius-lg: 1.5rem;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    word-break: keep-all !important;
    word-wrap: break-word !important;
}

body {
    font-family: 'Inter', 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    font-size: 1.1rem;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    word-break: keep-all !important;
    word-wrap: break-word !important;
}

/* Container Utility */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Header Styles */
header {
    background: rgba(248, 250, 252, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
    position: relative;
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 700;
    font-size: 1.5rem;
    transition: var(--transition);
}

.logo-icon {
    font-size: 2rem;
    margin-right: 0.5rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo:hover {
    color: #667eea;
    transform: scale(1.05);
}

.nav-menu {
    display: flex;
    gap: 35px;
    list-style: none;
    align-items: center;
}

.nav-menu a {
    text-decoration: none;
    color: #2c3e50;
    font-weight: 600;
    font-size: 1.1rem;
    padding: 12px 20px;
    position: relative;
    transition: all 0.3s ease;
    border-radius: 8px;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: #667eea;
    transition: width 0.3s ease;
}

.nav-menu a:hover::after {
    width: 100%;
}

.nav-menu a:hover {
    color: #667eea;
    transform: translateY(-2px);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: #2c3e50;
    font-size: 1.8em;
    cursor: pointer;
}

/* Mobile Menu Styles */
@media (max-width: 1024px) {
    .header-container {
        position: relative;
    }

    .header-container nav {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
        font-size: 1.8em;
    }

    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        box-shadow: 0 4px 20px rgba(0,0,0,0.1);
        border-radius: 15px;
        margin-top: 15px;
        padding: 20px;
        gap: 15px;
    }

    .nav-menu.active {
        display: flex;
        animation: slideDown 0.3s ease;
    }

    .nav-menu a {
        padding: 15px 20px;
        text-align: center;
        border-radius: 15px;
        background: #f8fafc;
        margin-bottom: 10px;
        transition: all 0.3s ease;
    }

    .nav-menu a:hover {
        background: linear-gradient(135deg, #667eea, #764ba2);
        color: white;
        transform: translateY(-2px);
    }
}

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

/* Main Content */
main {
    min-height: calc(100vh - 200px);
}

/* Page Header Styles */
.page-header {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05), rgba(118, 75, 162, 0.05));
    padding: 80px 0;
    text-align: center;
    margin-bottom: 60px;
}

.page-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.page-header p {
    color: var(--text-light);
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Button Styles */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: var(--primary-gradient);
    color: white;
    text-decoration: none;
    border-radius: var(--radius);
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

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

/* Form Styles */
.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-light);
    border-radius: var(--radius);
    font-size: 1rem;
    transition: var(--transition);
    background: var(--surface-light);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    background: white;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Footer Styles - from tail.php */
footer {
    background: #2c3e50;
    color: white;
    padding: 50px 20px;
    margin-top: 80px;
}

footer .footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 40px;
}

footer h3, footer h4 {
    margin-bottom: 20px;
}

footer h3 {
    font-size: 1.5em;
}

footer p {
    line-height: 1.8;
    opacity: 0.9;
}

footer a {
    color: inherit;
    text-decoration: none;
}

footer a:hover {
    opacity: 0.8;
}

.footer-bottom {
    text-align: center;
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid rgba(255,255,255,0.1);
    opacity: 0.7;
}

@media (max-width: 768px) {
    footer .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.mb-5 { margin-bottom: 3rem; }

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mt-5 { margin-top: 3rem; }

.hidden { display: none; }
.block { display: block; }
.inline-block { display: inline-block; }
.flex { display: flex; }
.grid { display: grid; }