/* Main Stylesheet for QRStuff Clone */

/* Custom Variables */
:root {
    --primary: #4a6fa5;
    --primary-dark: #166088;
    --primary-light: #6b8cbe;
    --accent: #4fc3a1;
    --accent-dark: #3db28d;
    --accent-light: #71d5b5;
    --dark: #2d3e50;
    --light: #f8f9fa;
    --gray: #6c757d;
    --gray-light: #adb5bd;
    --success: #28a745;
    --warning: #ffc107;
    --danger: #dc3545;
    --info: #17a2b8;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f7fa;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 1rem;
    color: var(--dark);
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.75rem;
}

h4 {
    font-size: 1.5rem;
}

h5 {
    font-size: 1.25rem;
}

h6 {
    font-size: 1rem;
}

p {
    margin-bottom: 1rem;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.3s;
}

a:hover {
    color: var(--primary-dark);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.5rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-weight: 500;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s;
}

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

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

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

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

.btn-outline-primary {
    background-color: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
}

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

.btn-lg {
    padding: 0.75rem 2rem;
    font-size: 1.1rem;
}

.btn-sm {
    padding: 0.25rem 1rem;
    font-size: 0.875rem;
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--dark);
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid #dee2e6;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 0.25rem rgba(74, 111, 165, 0.25);
}

.form-select {
    width: 100%;
    padding: 0.75rem 2rem 0.75rem 1rem;
    border: 1px solid #dee2e6;
    border-radius: 8px;
    font-size: 1rem;
    background-color: white;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23343a40' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='m2 5 6 6 6-6'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 16px 12px;
}

/* Cards */
.card {
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s, box-shadow 0.3s;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.card-header {
    padding: 1.5rem;
    border-bottom: 1px solid #dee2e6;
    background-color: transparent;
}

.card-body {
    padding: 1.5rem;
}

.card-title {
    margin-bottom: 1rem;
    color: var(--dark);
}

/* Navigation */
.navbar {
    background: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    padding: 1rem 0;
}

.navbar-brand {
    font-weight: bold;
    font-size: 1.5rem;
    color: var(--primary) !important;
}

.nav-link {
    color: var(--gray) !important;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary) !important;
}

/* QR Preview */
.qr-preview-container {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    position: sticky;
    top: 20px;
}

.qr-preview {
    width: 300px;
    height: 300px;
    background: #f8f9fa;
    border: 2px dashed #dee2e6;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    transition: all 0.3s;
}

.qr-preview:hover {
    border-color: var(--primary);
}

/* Color Picker */
.color-preview {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    cursor: pointer;
    border: 2px solid #dee2e6;
    transition: all 0.3s;
}

.color-preview:hover {
    border-color: var(--primary);
    transform: scale(1.1);
}

/* Templates */
.template-card {
    border: 2px solid #dee2e6;
    border-radius: 10px;
    padding: 1rem;
    cursor: pointer;
    transition: all 0.3s;
    text-align: center;
}

.template-card:hover {
    border-color: var(--primary);
    transform: translateY(-5px);
}

.template-preview {
    width: 100px;
    height: 100px;
    background: #f8f9fa;
    border-radius: 5px;
    margin: 0 auto 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Features */
.feature-card {
    text-align: center;
    padding: 2rem 1.5rem;
    border-radius: 10px;
    background: white;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s;
    height: 100%;
}

.feature-card:hover {
    transform: translateY(-10px);
}

.feature-icon {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: 1.5rem;
}

/* Footer */
.footer {
    background: var(--dark);
    color: white;
    padding: 4rem 0 2rem;
}

.footer a {
    color: #adb5bd;
    text-decoration: none;
    transition: color 0.3s;
}

.footer a:hover {
    color: white;
}

.footer h5 {
    color: white;
    margin-bottom: 1.5rem;
}

.copyright {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 1.5rem;
    margin-top: 3rem;
    text-align: center;
    color: #6c757d;
}

/* Responsive */
@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.75rem;
    }

    .qr-preview-container {
        position: static;
        margin-bottom: 2rem;
    }

    .qr-preview {
        width: 250px;
        height: 250px;
    }

    .navbar-collapse {
        margin-top: 1rem;
    }
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* Loading Spinner */
.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto;
}

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

/* Alerts */
.alert {
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    border: 1px solid transparent;
}

.alert-success {
    background-color: #d4edda;
    border-color: #c3e6cb;
    color: #155724;
}

.alert-error {
    background-color: #f8d7da;
    border-color: #f5c6cb;
    color: #721c24;
}

.alert-warning {
    background-color: #fff3cd;
    border-color: #ffeeba;
    color: #856404;
}

.alert-info {
    background-color: #d1ecf1;
    border-color: #bee5eb;
    color: #0c5460;
}

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

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

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

.p-1 { padding: 0.5rem; }
.p-2 { padding: 1rem; }
.p-3 { padding: 1.5rem; }
.p-4 { padding: 2rem; }
.p-5 { padding: 3rem; }

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

.justify-content-center { justify-content: center; }
.justify-content-between { justify-content: space-between; }
.justify-content-around { justify-content: space-around; }

.align-items-center { align-items: center; }
.align-items-start { align-items: flex-start; }
.align-items-end { align-items: flex-end; }

.flex-column { flex-direction: column; }
.flex-row { flex-direction: row; }
.flex-wrap { flex-wrap: wrap; }

.w-100 { width: 100%; }
.h-100 { height: 100%; }

.position-relative { position: relative; }
.position-absolute { position: absolute; }
.position-fixed { position: fixed; }
.position-sticky { position: sticky; }

.bg-primary { background-color: var(--primary); }
.bg-accent { background-color: var(--accent); }
.bg-dark { background-color: var(--dark); }
.bg-light { background-color: var(--light); }
.bg-white { background-color: white; }

.text-primary { color: var(--primary); }
.text-accent { color: var(--accent); }
.text-dark { color: var(--dark); }
.text-light { color: var(--light); }
.text-white { color: white; }
.text-muted { color: var(--gray); }

.rounded { border-radius: 8px; }
.rounded-circle { border-radius: 50%; }

.shadow-sm { box-shadow: 0 2px 4px rgba(0,0,0,0.1); }
.shadow { box-shadow: 0 5px 15px rgba(0,0,0,0.1); }
.shadow-lg { box-shadow: 0 10px 30px rgba(0,0,0,0.15); }

.border { border: 1px solid #dee2e6; }
.border-top { border-top: 1px solid #dee2e6; }
.border-bottom { border-bottom: 1px solid #dee2e6; }
.border-left { border-left: 1px solid #dee2e6; }
.border-right { border-right: 1px solid #dee2e6; }

.overflow-hidden { overflow: hidden; }
.overflow-auto { overflow: auto; }
.overflow-scroll { overflow: scroll; }