/* Drones Naija Membership Portal - Modern Minimalist Design */

:root {
    /* Brand Colors - Matching Nigeria Flag */
    --primary-green: #008751;
    --primary-navy: #1e3a8a;
    --accent-green: #10b981;
    --accent-blue: #3b82f6;
    
    /* Neutral Colors */
    --white: #ffffff;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-500: #6b7280;
    --gray-700: #374151;
    --gray-900: #111827;
    
    /* Design System */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    --radius-sm: 0.375rem;
    --radius: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', sans-serif;
    line-height: 1.65;
    color: var(--gray-700);
    background-color: var(--gray-50);
    font-size: 0.9375rem;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography - Smaller, cleaner */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 0.75rem;
    color: white;
    letter-spacing: -0.025em;
}

@media (max-width: 768px) {
    h1 {
        font-size: 1.5rem;
        padding-top: 50px;
    }
}

h1 { font-size: 1.875rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.125rem; }
h5 { font-size: 1rem; }
h6 { font-size: 0.875rem; }

p {
    margin-bottom: 0.875rem;
    color: var(--gray-500);
    font-size: 0.9375rem;
}

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.container-fluid {
    width: 100%;
    padding: 0 1rem;
}

/* Header - Clean and minimalist */
.header {
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(8px);
    background: rgba(255, 255, 255, 0.95);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.875rem 0;
    gap: 2rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    text-decoration: none;
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--gray-900);
    transition: var(--transition);
}

.logo img {
    height: 28px;
    width: auto;
    display: block;
}

.logo:hover {
    opacity: 0.8;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 0.25rem;
    align-items: center;
}

.nav-link {
    color: var(--gray-700);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.875rem;
    padding: 0.5rem 0.875rem;
    border-radius: var(--radius);
    transition: var(--transition);
    white-space: nowrap;
}

.nav-link:hover {
    color: var(--primary-navy);
    background: var(--gray-100);
}

.nav-link.active {
    color: var(--primary-navy);
    background: var(--gray-100);
}

/* Mobile menu button - Hamburger */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 0.5rem;
    background: none;
    border: none;
    gap: 4px;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--gray-700);
    border-radius: 2px;
    transition: var(--transition);
}

.mobile-menu-btn:hover span {
    background: var(--primary-navy);
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(-45deg) translate(-5px, 5px);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(45deg) translate(-5px, -5px);
}

/* Buttons - Modern and minimal */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    border: none;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 0.875rem;
    text-decoration: none;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    line-height: 1.5;
    white-space: nowrap;
}

.btn-primary {
    background: var(--primary-navy);
    color: var(--white);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background: #1e40af;
    box-shadow: var(--shadow-md);
}

.btn-primary:active {
    transform: scale(0.98);
}

.btn-secondary {
    background: var(--primary-green);
    color: var(--white);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
    background: #059669;
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background: transparent;
    color: var(--primary-navy);
    border: 1.5px solid var(--gray-300);
}

.btn-outline:hover {
    background: var(--gray-50);
    border-color: var(--primary-navy);
}

.btn-sm {
    padding: 0.4375rem 0.875rem;
    font-size: 0.8125rem;
}

.btn-lg {
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
}

/* Cards - Clean and minimal */
.card {
    background: var(--white);
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    padding: 1.25rem;
    margin-bottom: 1.25rem;
    transition: var(--transition-slow);
}

.card:hover {
    border-color: var(--gray-300);
    box-shadow: var(--shadow-sm);
}

.card-header {
    border-bottom: 1px solid var(--gray-100);
    padding-bottom: 0.875rem;
    margin-bottom: 1rem;
}

.card-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 0.25rem;
}

.card-subtitle {
    color: var(--gray-500);
    font-size: 0.8125rem;
}

/* Forms - Clean inputs */
.form-group {
    margin-bottom: 1.25rem;
}

.form-label {
    display: block;
    margin-bottom: 0.375rem;
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--gray-700);
}

.form-control {
    width: 100%;
    padding: 0.625rem 0.875rem;
    border: 1.5px solid var(--gray-300);
    border-radius: var(--radius);
    font-size: 0.9375rem;
    transition: var(--transition);
    background: var(--white);
    color: var(--gray-900);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-navy);
    box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.08);
}

.form-control:hover:not(:focus) {
    border-color: var(--gray-400);
}

.form-control.error {
    border-color: #dc2626;
}

.form-text {
    font-size: 0.8125rem;
    color: var(--gray-500);
    margin-top: 0.375rem;
}

.form-error {
    color: #dc2626;
    font-size: 0.8125rem;
    margin-top: 0.375rem;
}

/* Alerts - Modern and subtle */
.alert {
    padding: 0.875rem 1rem;
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
    border: 1px solid;
    font-size: 0.875rem;
    font-weight: 500;
}

.alert-success {
    background-color: #d1fae5;
    border-color: #a7f3d0;
    color: #065f46;
}

.alert-danger {
    background-color: #fee2e2;
    border-color: #fecaca;
    color: #991b1b;
}

.alert-warning {
    background-color: #fef3c7;
    border-color: #fde68a;
    color: #92400e;
}

.alert-info {
    background-color: #dbeafe;
    border-color: #bfdbfe;
    color: #1e40af;
}

/* Tables - Minimal and clean */
.table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1rem;
    font-size: 0.875rem;
}

.table th,
.table td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--gray-200);
}

.table th {
    background-color: var(--gray-50);
    font-weight: 600;
    color: var(--gray-700);
    font-size: 0.8125rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.table tbody tr {
    transition: var(--transition);
}

.table tbody tr:hover {
    background-color: var(--gray-50);
}

/* Status badges - Pill style */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.625rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 9999px;
    text-transform: capitalize;
    line-height: 1;
}

.badge-pending {
    background-color: #fef3c7;
    color: #92400e;
}

.badge-approved {
    background-color: #d1fae5;
    color: #065f46;
}

.badge-disapproved {
    background-color: #fee2e2;
    color: #991b1b;
}

/* Grid system */
.row {
    display: flex;
    flex-wrap: wrap;
    margin: 0 -0.75rem;
}

.col {
    flex: 1;
    padding: 0 0.75rem;
}

.col-1 { flex: 0 0 8.333333%; }
.col-2 { flex: 0 0 16.666667%; }
.col-3 { flex: 0 0 25%; }
.col-4 { flex: 0 0 33.333333%; }
.col-6 { flex: 0 0 50%; }
.col-8 { flex: 0 0 66.666667%; }
.col-9 { flex: 0 0 75%; }
.col-12 { flex: 0 0 100%; }

/* Dashboard stats - Gradient cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.stat-card {
    background: linear-gradient(135deg, var(--primary-navy) 0%, #2563eb 100%);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    color: white;
    position: relative;
    overflow: hidden;
    transition: var(--transition-slow);
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100px;
    height: 100px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transform: translate(30%, -30%);
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    position: relative;
    z-index: 1;
}

.stat-label {
    font-size: 0.875rem;
    text-transform: capitalize;
    letter-spacing: 0.025em;
    opacity: 0.9;
    position: relative;
    z-index: 1;
}

/* Progress steps - Modern line style */
.steps {
    display: flex;
    justify-content: space-between;
    margin-bottom: 2rem;
    position: relative;
}

.steps::before {
    content: '';
    position: absolute;
    top: 20px;
    left: 5%;
    right: 5%;
    height: 2px;
    background: var(--gray-200);
    z-index: 0;
}

.step {
    flex: 1;
    text-align: center;
    position: relative;
    z-index: 1;
}

.step-number {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--white);
    border: 2px solid var(--gray-300);
    color: var(--gray-500);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 0.625rem;
    font-weight: 600;
    font-size: 0.875rem;
    transition: var(--transition);
}

.step.active .step-number {
    background: var(--primary-navy);
    border-color: var(--primary-navy);
    color: var(--white);
}

.step.completed .step-number {
    background: var(--primary-green);
    border-color: var(--primary-green);
    color: var(--white);
}

.step-title {
    font-size: 0.8125rem;
    color: var(--gray-500);
}

.step.active .step-title {
    color: var(--primary-navy);
    font-weight: 600;
}

/* File upload - Clean dashed border */
.file-upload {
    border: 2px dashed var(--gray-300);
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
    background: var(--gray-50);
}

.file-upload:hover {
    border-color: var(--primary-navy);
    background-color: rgba(30, 58, 138, 0.03);
}

.file-upload input[type="file"] {
    display: none;
}

/* Modal - Clean overlay */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(17, 24, 39, 0.5);
    backdrop-filter: blur(4px);
    z-index: 1000;
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
}

.modal-header {
    border-bottom: 1px solid var(--gray-200);
    padding-bottom: 1rem;
    margin-bottom: 1rem;
}

.modal-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0;
}

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

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }
.mb-5 { margin-bottom: 3rem; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.mt-5 { margin-top: 3rem; }

.d-none { display: none; }
.d-block { display: block; }
.d-flex { display: flex; }
.d-grid { display: grid; }

.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.align-center { align-items: center; }

/* Responsive design - Mobile first */
@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }
    
    .navbar {
        padding: 0.75rem 0;
    }
    
    .logo img {
        height: 120px;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .nav-menu {
        display: none;
        flex-direction: column;
        gap: 0.5rem;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--white);
        border-bottom: 1px solid var(--gray-200);
        padding: 1rem;
        box-shadow: var(--shadow-md);
    }
    
    .nav-menu.show {
        display: flex;
    }
    
    .nav-link {
        padding: 0.625rem 0.875rem;
        width: 100%;
        text-align: left;
    }
    
    .row {
        flex-direction: column;
    }
    
    .col {
        margin-bottom: 1rem;
        padding: 0;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 0.875rem;
    }
    
    .stat-card {
        padding: 1.25rem;
    }
    
    .steps {
        flex-direction: column;
        gap: 1rem;
    }
    
    .steps::before {
        display: none;
    }
    
    .step {
        display: flex;
        align-items: center;
        text-align: left;
        gap: 0.75rem;
    }
    
    .step-number {
        margin: 0;
        flex-shrink: 0;
    }
    
    h1 { font-size: 1.5rem; }
    h2 { font-size: 1.25rem; }
    h3 { font-size: 1.125rem; }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .modal-content {
        width: 95%;
        padding: 1.25rem;
    }
    
    .card {
        padding: 1rem;
    }
    
    .table {
        font-size: 0.8125rem;
    }
    
    .table th,
    .table td {
        padding: 0.625rem 0.75rem;
    }
}

@media (max-width: 480px) {
    .logo {
        font-size: 1rem;
    }
    
    .logo img {
        height: 22px;
    }
    
    .card {
        padding: 0.875rem;
        border-radius: var(--radius);
    }
    
    .form-control {
        padding: 0.5rem 0.75rem;
        font-size: 0.875rem;
    }
    
    .btn {
        padding: 0.5625rem 1rem;
        font-size: 0.8125rem;
    }
    
    .stat-card {
        padding: 1rem;
    }
    
    .stat-number {
        font-size: 1.75rem;
    }
}

/* Loading spinner - Smooth animation */
.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--gray-200);
    border-top: 3px solid var(--primary-navy);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto;
}

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

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Selection color */
::selection {
    background: var(--primary-navy);
    color: white;
}

::-moz-selection {
    background: var(--primary-navy);
    color: white;
}

/* Focus visible for accessibility */
:focus-visible {
    outline: 2px solid var(--primary-navy);
    outline-offset: 2px;
}

/* Print styles for ID cards */
@media print {
    .no-print {
        display: none !important;
    }
    
    body {
        background: white;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #ccc;
    }
}