/* Main Styles - Base Layout and Typography */

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow-x: hidden;
}

/* Loading Spinner */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.5s ease;
}

.loading-overlay.fade-out {
    opacity: 0;
    pointer-events: none;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--accent-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Layout */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

.header {
    text-align: center;
    padding: 100px 0 80px;
    position: relative;
    overflow: hidden;
    opacity: 0;
    animation: slideUp 1s ease-out 0.5s both;
}

.name {
    font-size: clamp(2.5rem, 8vw, 4.5rem);
    font-weight: 800;
    letter-spacing: -0.04em;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.title {
    font-size: 1.5rem;
    color: var(--text-secondary);
    font-weight: 400;
    margin-bottom: 15px;
}

.location {
    font-size: 1.1rem;
    color: var(--text-tertiary);
    margin-bottom: 20px;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Spreadsheet Layout */
.spreadsheet {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    overflow: hidden;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 20px 80px var(--shadow-light);
    opacity: 0;
    animation: fadeInUp 0.8s ease-out 1s both;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.sheet-header {
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-secondary) 100%);
    padding: 24px 30px;
    border-bottom: 1px solid var(--border-color);
    font-weight: 700;
    font-size: 1.3rem;
    color: var(--text-primary);
    position: relative;
    overflow: hidden;
}

.sheet-row {
    border-bottom: 1px solid var(--border-color);
    transition: all 0.3s ease;
    position: relative;
    opacity: 0;
    animation: slideInRow 0.6s ease-out both;
}

@keyframes slideInRow {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.sheet-row::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--accent-color);
    transform: scaleY(0);
    transition: transform 0.3s ease;
}

.sheet-row:hover {
    background: var(--bg-tertiary);
}

.sheet-row:hover::before {
    transform: scaleY(1);
}

.sheet-row:last-child {
    border-bottom: none;
}

.row-header {
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-secondary) 100%);
    padding: 30px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-primary);
    font-size: 15px;
}

.row-content {
    padding: 30px;
}

.icon {
    font-size: 20px;
    transition: all 0.3s ease;
}

.sheet-row:hover .icon {
    transform: scale(1.1);
}

/* Footer */
.footer {
    text-align: center;
    padding: 40px 0;
    border-top: 1px solid var(--border-color);
    margin-top: 60px;
    color: var(--text-tertiary);
    font-size: 14px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .row-header, .row-content {
        padding: 20px;
    }
    
    .container {
        padding: 15px;
    }
    
    .header {
        padding: 60px 0 40px;
    }
}