:root {
    --bg-gradient: linear-gradient(135deg, #0f172a 0%, #1e1b4b 100%);
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --accent: #6366f1;
    --accent-hover: #4f46e5;
    --success: #10b981;
    --danger: #ef4444;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    background: var(--bg-gradient);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
}

.app-container {
    width: 100%;
    max-width: 1200px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

@media (max-width: 480px) {
    .app-container {
        padding: 1rem;
        gap: 1rem;
    }
}

.glass-header {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    padding: 1.5rem 2rem;
    border-radius: 16px;
    text-align: center;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
}

.grid-layout {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 2rem;
}

.forms-section {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
}

.glass-card h2 {
    margin-bottom: 1.5rem;
    font-size: 1.25rem;
    color: var(--text-primary);
    border-bottom: 1px solid var(--glass-border);
    padding-bottom: 0.5rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

input, select {
    width: 100%;
    padding: 0.75rem;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s ease;
}

input:focus, select:focus {
    outline: none;
    border-color: var(--accent);
    background: rgba(0, 0, 0, 0.4);
}

.btn {
    width: 100%;
    padding: 0.75rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

.btn.primary:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
}

.btn.secondary {
    background: transparent;
    border: 1px solid var(--accent);
    color: var(--accent);
}

.btn.secondary:hover {
    background: rgba(99, 102, 241, 0.1);
    transform: translateY(-2px);
}

.full-height {
    height: 100%;
}

.table-container {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    border-radius: 8px;
}

.glass-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 600px; /* Force horizontal scroll on very small screens for data integrity */
}

.glass-table th, .glass-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--glass-border);
}

.glass-table th {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.875rem;
}

.glass-table tbody tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

.badge {
    padding: 0.25rem 0.5rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
    background: rgba(255, 255, 255, 0.1);
}

.badge.torba { color: #38bdf8; background: rgba(56, 189, 248, 0.1); }
.badge.kilo { color: #10b981; background: rgba(16, 185, 129, 0.1); }
.badge.palet_adet { color: #f472b6; background: rgba(244, 114, 182, 0.1); }
.badge.m3 { color: #a855f7; background: rgba(168, 85, 247, 0.1); }

.stock-value {
    font-weight: 600;
    color: var(--success);
}

.toast {
    position: fixed;
    bottom: -100px;
    right: 20px;
    background: var(--success);
    color: white;
    padding: 1rem 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    transition: bottom 0.3s ease;
    z-index: 1000;
}

.toast.show {
    bottom: 20px;
}

.toast.error {
    background: var(--danger);
}

@media (max-width: 768px) {
    .grid-layout {
        grid-template-columns: 1fr;
    }
    
    .glass-header {
        padding: 1.25rem 1rem;
    }

    .header-content {
        flex-direction: column;
        text-align: center;
    }

    .header-content h1 {
        font-size: 1.5rem;
    }

    .header-right {
        width: 100%;
        justify-content: center;
        flex-direction: column;
        gap: 0.75rem;
    }

    .company-badge {
        width: 100%;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .app-container {
        padding: 0.75rem;
        gap: 1.5rem;
    }

    .glass-card {
        padding: 1.5rem 1rem;
    }
    
    input, select, .btn {
        padding: 1rem; /* Even larger touch target */
        font-size: 16px;
    }

    .badge {
        font-size: 0.7rem;
        padding: 0.2rem 0.4rem;
    }
}

/* Modal and Actions */
.action-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 1.25rem;
    padding: 0.25rem;
    transition: transform 0.2s;
}
.action-btn:hover {
    transform: scale(1.1);
}

.modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.5);
    backdrop-filter: blur(4px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}
.modal-overlay.show {
    opacity: 1;
    pointer-events: all;
}
.modal-content {
    width: 90%;
    max-width: 400px;
    transform: translateY(-20px);
    transition: transform 0.3s ease;
}
.modal-overlay.show .modal-content {
    transform: translateY(0);
}

/* Auth and Animation Styles */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.header-content h1 {
    margin: 0;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.company-badge {
    background: rgba(99, 102, 241, 0.15);
    border: 1px solid rgba(99, 102, 241, 0.3);
    color: var(--accent);
    padding: 0.4rem 1rem;
    border-radius: 9999px;
    font-size: 0.85rem;
    font-weight: 600;
}

.btn-logout {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #ef4444;
    padding: 0.4rem 1rem;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-logout:hover {
    background: rgba(239, 68, 68, 0.2);
}