/* ============================================
   CHANDA ENTERPRISES - STORE MANAGEMENT SYSTEM
   White + Red/Orange Brand Theme (matches chandaenterprises.com)
   Variable NAMES kept as-is on purpose (--accent-purple etc.) so every
   template's var(--accent-purple) reference below keeps working without
   having to touch 20+ files -- only the color VALUES changed here.
   ============================================ */

:root {
    --primary-dark: #7f1d1d;      /* deep red */
    --primary-purple: #c1121f;    /* brand red */
    --primary-light: #e8590c;     /* brand orange */
    --accent-purple: #d7263d;     /* red/orange accent used for headings, links, KPI values */
    --bg-dark: #ffffff;
    --bg-darker: #f7f5f3;
    --glass-light: rgba(215, 38, 61, 0.04);
    --glass-medium: rgba(215, 38, 61, 0.08);
    --glass-dark: rgba(0, 0, 0, 0.035);
    --text-light: #262322;
    --text-lighter: #6b6360;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;
    --shadow-sm: 0 2px 8px rgba(120, 30, 20, 0.08);
    --shadow-md: 0 8px 32px rgba(120, 30, 20, 0.12);
    --shadow-lg: 0 20px 60px rgba(120, 30, 20, 0.18);
    --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

html, body {
    width: 100%;
    height: 100%;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--bg-darker) 0%, var(--bg-dark) 100%);
    color: var(--text-light);
    background-attachment: fixed;
    min-height: 100vh;
}

/* ============================================
   SCROLLBAR STYLING
   ============================================ */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--glass-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-light);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-purple);
}

/* ============================================
   GLASS MORPHISM CARD EFFECT
   ============================================ */
.glass {
    background: var(--glass-light);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-medium);
    border-radius: 12px;
}

.glass-sm {
    background: var(--glass-light);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 8px;
}

/* ============================================
   3D CARD EFFECTS
   ============================================ */
.card-3d {
    position: relative;
    transition: var(--transition);
    transform-style: preserve-3d;
    perspective: 1000px;
}

.card-3d:hover {
    transform: translateY(-8px) rotateX(5deg);
    box-shadow: var(--shadow-lg);
}

.card-3d::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, transparent 100%);
    border-radius: 12px;
    pointer-events: none;
}

/* ============================================
   GRADIENT BACKGROUNDS
   ============================================ */
.gradient-purple {
    background: linear-gradient(135deg, var(--primary-purple) 0%, var(--accent-purple) 100%);
}

.gradient-dark {
    background: linear-gradient(135deg, var(--bg-dark) 0%, var(--primary-dark) 100%);
}

/* ============================================
   LAYOUT
   ============================================ */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: 280px;
    height: 100vh;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(250, 246, 244, 0.98) 100%);
    backdrop-filter: blur(10px);
    border-right: 1px solid var(--glass-medium);
    box-shadow: var(--shadow-sm);
    overflow-y: auto;
    z-index: 1000;
    transition: var(--transition);
}

.sidebar.collapsed {
    width: 80px;
}

.main-content {
    margin-left: 280px;
    min-height: 100vh;
    padding: 20px;
    transition: var(--transition);
}

.main-content.expanded {
    margin-left: 80px;
}

.topbar {
    background: var(--glass-medium);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--glass-medium);
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 900;
    margin-bottom: 20px;
    border-radius: 12px;
}

/* ============================================
   NAVIGATION
   ============================================ */
.nav-item {
    padding: 12px 16px;
    color: var(--text-lighter);
    cursor: pointer;
    transition: var(--transition);
    border-left: 3px solid transparent;
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    font-size: 14px;
}

.nav-item:hover,
.nav-item.active {
    color: var(--accent-purple);
    border-left-color: var(--accent-purple);
    background: rgba(215, 38, 61, 0.08);
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
}

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

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

.btn-secondary {
    background: var(--glass-medium);
    color: var(--text-light);
    border: 1px solid var(--glass-medium);
}

.btn-secondary:hover {
    background: var(--glass-dark);
    border-color: var(--accent-purple);
}

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

.btn-success:hover {
    background: #059669;
}

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

.btn-danger:hover {
    background: #dc2626;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

/* ============================================
   FORMS
   ============================================ */
.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-light);
    font-weight: 500;
    font-size: 14px;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="date"],
select,
textarea {
    width: 100%;
    padding: 10px 12px;
    background: var(--glass-dark);
    border: 1px solid var(--glass-medium);
    border-radius: 8px;
    color: var(--text-light);
    font-family: inherit;
    transition: var(--transition);
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
input[type="number"]:focus,
input[type="date"]:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--accent-purple);
    background: var(--glass-medium);
    box-shadow: 0 0 12px rgba(215, 38, 61, 0.25);
}

textarea {
    resize: vertical;
    min-height: 100px;
}

/* ============================================
   TABLES
   ============================================ */
.table-container {
    overflow-x: auto;
    border-radius: 12px;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

thead {
    background: var(--glass-dark);
}

th {
    padding: 12px;
    text-align: left;
    color: var(--accent-purple);
    font-weight: 600;
    border-bottom: 2px solid var(--glass-medium);
}

td {
    padding: 12px;
    border-bottom: 1px solid var(--glass-medium);
}

tbody tr:hover {
    background: var(--glass-dark);
}

/* ============================================
   DASHBOARD CARDS (KPI)
   ============================================ */
.kpi-card {
    background: linear-gradient(135deg, rgba(215, 38, 61, 0.07) 0%, rgba(232, 89, 12, 0.10) 100%);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(215, 38, 61, 0.18);
    border-radius: 12px;
    padding: 24px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.kpi-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(215, 38, 61, 0.08) 0%, transparent 70%);
    transition: var(--transition);
}

.kpi-card:hover {
    transform: translateY(-8px);
    border-color: var(--accent-purple);
    box-shadow: 0 12px 40px rgba(215, 38, 61, 0.18);
}

.kpi-card:hover::before {
    top: -25%;
    right: -25%;
}

.kpi-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--accent-purple);
    margin: 12px 0;
}

.kpi-label {
    font-size: 14px;
    color: var(--text-lighter);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.kpi-change {
    font-size: 12px;
    margin-top: 8px;
}

.kpi-change.positive {
    color: var(--success);
}

.kpi-change.negative {
    color: var(--danger);
}

/* ============================================
   ALERTS
   ============================================ */
.alert {
    padding: 14px 16px;
    border-radius: 8px;
    border-left: 4px solid;
    margin-bottom: 16px;
    display: flex;
    gap: 12px;
    align-items: center;
}

.alert-danger {
    background: rgba(239, 68, 68, 0.1);
    border-left-color: var(--danger);
    color: #fca5a5;
}

.alert-warning {
    background: rgba(245, 158, 11, 0.1);
    border-left-color: var(--warning);
    color: #fcd34d;
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    border-left-color: var(--success);
    color: #86efac;
}

.alert-info {
    background: rgba(59, 130, 246, 0.1);
    border-left-color: var(--info);
    color: #93c5fd;
}

/* ============================================
   MODAL
   ============================================ */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(5px);
    z-index: 2000;
    justify-content: center;
    align-items: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.97) 0%, rgba(250, 240, 235, 0.95) 100%);
    border: 1px solid var(--glass-medium);
    border-radius: 16px;
    padding: 30px;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    animation: slideUp 0.3s ease-out;
}

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

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--glass-medium);
}

.modal-header h2 {
    font-size: 20px;
    color: var(--accent-purple);
}

.close-btn {
    background: none;
    border: none;
    color: var(--text-lighter);
    font-size: 24px;
    cursor: pointer;
    transition: var(--transition);
}

.close-btn:hover {
    color: var(--accent-purple);
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

.fade-in {
    animation: fadeIn 0.5s ease-out;
}

.slide-in {
    animation: slideInLeft 0.5s ease-out;
}

/* ============================================
   BADGES
   ============================================ */
.badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-success {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success);
}

.badge-warning {
    background: rgba(245, 158, 11, 0.2);
    color: var(--warning);
}

.badge-danger {
    background: rgba(239, 68, 68, 0.2);
    color: var(--danger);
}

.badge-info {
    background: rgba(59, 130, 246, 0.2);
    color: var(--info);
}

/* ============================================
   LOADING & SPINNER
   ============================================ */
.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid var(--glass-medium);
    border-top-color: var(--accent-purple);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 768px) {
    .sidebar {
        width: 80px;
    }

    .sidebar.collapsed {
        width: 80px;
    }

    .main-content {
        margin-left: 80px;
    }

    .main-content.expanded {
        margin-left: 80px;
    }

    .modal-content {
        max-width: 100%;
        max-height: 100vh;
    }

    .kpi-value {
        font-size: 24px;
    }

    table {
        font-size: 12px;
    }

    th, td {
        padding: 8px;
    }

    .topbar {
        flex-direction: column;
        gap: 12px;
    }
}

@media (max-width: 480px) {
    .sidebar {
        width: 70px;
    }

    .main-content {
        margin-left: 70px;
        padding: 12px;
    }

    .kpi-card {
        padding: 16px;
    }

    .btn {
        padding: 8px 12px;
        font-size: 12px;
    }
}