/**
 * E-Archive System - Global Styles
 * Responsive Design System
 */

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Responsive Container */
.container {
    width: 100%;
    margin-left: auto;
    margin-right: auto;
    padding-left: 1rem;
    padding-right: 1rem;
}

@media (min-width: 640px) {
    .container {
        max-width: 640px;
        padding-left: 1.5rem;
        padding-right: 1.5rem;
    }
}

@media (min-width: 768px) {
    .container {
        max-width: 768px;
    }
}

@media (min-width: 1024px) {
    .container {
        max-width: 1024px;
        padding-left: 2rem;
        padding-right: 2rem;
    }
}

@media (min-width: 1280px) {
    .container {
        max-width: 1280px;
    }
}

/* Responsive Typography */
h1, h2, h3, h4, h5, h6 {
    line-height: 1.2;
    margin-top: 0;
}

/* Mobile First Typography Scale */
h1 { font-size: 1.5rem; }
h2 { font-size: 1.25rem; }
h3 { font-size: 1.125rem; }

@media (min-width: 768px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.25rem; }
}

@media (min-width: 1024px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.5rem; }
}

/* Responsive Tables */
.table-responsive {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.table-responsive table {
    min-width: 100%;
    border-collapse: collapse;
}

/* Card Components */
.card {
    background: #ffffff;
    border-radius: 0.75rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    padding: 1rem;
    width: 100%;
}

@media (min-width: 768px) {
    .card {
        padding: 1.5rem;
    }
}

/* Grid System */
.grid {
    display: grid;
    gap: 1rem;
}

@media (min-width: 640px) {
    .grid {
        gap: 1.5rem;
    }
}

.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

@media (max-width: 639px) {
    .grid-cols-2,
    .grid-cols-3,
    .grid-cols-4 {
        grid-template-columns: repeat(1, minmax(0, 1fr));
    }
}

@media (min-width: 640px) {
    .sm\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .sm\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (min-width: 768px) {
    .md\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .md\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .md\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

@media (min-width: 1024px) {
    .lg\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .lg\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 0.5rem;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

@media (max-width: 639px) {
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .btn + .btn {
        margin-top: 0.5rem;
    }
}

/* Form Elements */
input, select, textarea {
    width: 100%;
    font-size: 1rem;
    padding: 0.625rem 0.875rem;
    border-radius: 0.5rem;
    border: 1px solid #e0e3e5;
}

@media (max-width: 767px) {
    input, select, textarea {
        font-size: 16px; /* Prevent zoom on iOS */
    }
}

/* Navigation */
.nav-mobile {
    display: none;
}

.nav-desktop {
    display: flex;
}

@media (max-width: 767px) {
    .nav-mobile {
        display: flex;
    }
    
    .nav-desktop {
        display: none;
    }
}

/* Sidebar */
.sidebar {
    position: fixed;
    top: 0;
    left: -280px;
    width: 280px;
    height: 100vh;
    z-index: 50;
    transition: left 0.3s ease;
}

.sidebar.open {
    left: 0;
}

.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 49;
}

.sidebar-overlay.open {
    display: block;
}

@media (min-width: 1024px) {
    .sidebar {
        left: 0;
        position: relative;
        height: auto;
    }
    
    .sidebar-overlay {
        display: none !important;
    }
}

/* Modal */
.modal {
    position: fixed;
    inset: 0;
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 100;
    padding: 1rem;
}

.modal.open {
    display: flex;
}

.modal-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1;
}

.modal-content {
    position: relative;
    background: #ffffff;
    border-radius: 0.75rem;
    max-width: 100%;
    z-index: 2;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
}

@media (min-width: 640px) {
    .modal-content {
        max-width: 28rem;
    }
}

@media (min-width: 1024px) {
    .modal-content {
        max-width: 36rem;
    }
}

/* Utility Classes */
.hidden-mobile {
    display: none;
}

@media (min-width: 768px) {
    .hidden-mobile {
        display: block;
    }
}

.visible-mobile {
    display: block;
}

@media (min-width: 768px) {
    .visible-mobile {
        display: none;
    }
}

/* Flexbox Utilities */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }

@media (max-width: 767px) {
    .flex-mobile-col {
        flex-direction: column;
    }
    
    .gap-4 {
        gap: 0.75rem;
    }
}

/* Spacing Utilities */
.p-2 { padding: 0.5rem; }
.p-3 { padding: 0.75rem; }
.p-4 { padding: 1rem; }
.p-6 { padding: 1.5rem; }

.m-2 { margin: 0.5rem; }
.m-3 { margin: 0.75rem; }
.m-4 { margin: 1rem; }

/* Responsive Images */
img {
    max-width: 100%;
    height: auto;
}

/* Print Styles */
@media print {
    .no-print {
        display: none !important;
    }
    
    body {
        background: white;
    }
}