@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    --wa-green: #25D366;
    --wa-dark-green: #128C7E;
    --bg-color: #f0f2f5;
    --card-bg: rgba(255, 255, 255, 0.9);
    --text-color: #111b21;
    --text-muted: #667781;
    --border-color: #d1d7db;
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.07);
    --glass-border: 1px solid rgba(255, 255, 255, 0.18);
    --input-bg: #fff;
}

[data-theme="dark"] {
    --bg-color: #0b141a;
    --card-bg: rgba(32, 44, 51, 0.9);
    --text-color: #e9edef;
    --text-muted: #8696a0;
    --border-color: #2a3942;
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
    --glass-border: 1px solid rgba(255, 255, 255, 0.05);
    --input-bg: #2a3942;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.3s, color 0.3s;
    line-height: 1.6;
}

.app-container {
    display: flex;
    flex-direction: column;
    max-width: 1400px;
    margin: 0 auto;
    min-height: 100vh;
}

@media (min-width: 992px) {
    .app-container {
        flex-direction: row;
        gap: 40px;
        padding: 40px 20px;
    }
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
}

@media (min-width: 992px) {
    .sidebar-nav {
        width: 300px;
        flex-shrink: 0;
        position: sticky;
        top: 40px;
        height: max-content;
    }
}

.main-wrapper {
    flex: 1;
    min-width: 0;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    margin-bottom: 10px;
}

@media (min-width: 992px) {
    .header {
        padding: 0 0 30px 0;
    }
}

.header h1 {
    font-size: 1.4rem;
    color: var(--wa-green);
    display: flex;
    align-items: center;
    gap: 10px;
}

.theme-toggle {
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 1.5rem;
    cursor: pointer;
}

.main-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
}

.glass-card {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 35px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.06);
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease;
}

.glass-card:hover {
    transform: translateY(-5px);
}

.card-title {
    font-size: 1.25rem;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 8px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    font-size: 0.9rem;
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background-color: #f8f9fa;
    color: var(--text-color);
    font-size: 1rem;
    transition: all 0.3s ease;
}

[data-theme="dark"] .form-control {
    background-color: rgba(0,0,0,0.2);
}

.form-control:focus {
    outline: none;
    border-color: var(--wa-green);
    background-color: var(--input-bg);
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.1);
}

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

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    width: 100%;
    text-decoration: none;
}

.btn-primary {
    background-color: var(--wa-green);
    color: #fff;
}

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

.btn-secondary {
    background-color: var(--input-bg);
    color: var(--text-color);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: var(--border-color);
}

.btn-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-top: 20px;
}

.templates-wrapper {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 10px;
}

.template-badge {
    background-color: rgba(37, 211, 102, 0.1);
    color: var(--wa-green);
    border: 1px solid rgba(37, 211, 102, 0.2);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s;
}

.template-badge:hover {
    background-color: var(--wa-green);
    color: #fff;
}

.floating-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background-color: var(--wa-green);
    color: #fff;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.4);
    z-index: 1000;
    transition: transform 0.3s;
    text-decoration: none;
}

.floating-btn:hover {
    transform: scale(1.1);
}

.seo-content {
    margin-top: 60px;
    padding: 40px;
    background: var(--card-bg);
    border-radius: 16px;
    border: var(--glass-border);
    margin-bottom: 100px;
}

.seo-content h2 {
    color: var(--wa-green);
    margin-top: 40px;
    margin-bottom: 20px;
    font-size: 1.8rem;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 10px;
}

.seo-content h3 {
    color: var(--text-color);
    margin-top: 30px;
    margin-bottom: 15px;
    font-size: 1.4rem;
}

.seo-content p {
    margin-bottom: 15px;
    font-size: 1.05rem;
}

.seo-content ul {
    margin-bottom: 20px;
    padding-left: 20px;
}

.seo-content li {
    margin-bottom: 10px;
}

.faq-item {
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 15px;
}

.faq-q {
    font-weight: 600;
    margin-bottom: 10px;
    font-size: 1.1rem;
}

.faq-a {
    color: var(--text-muted);
}

.qr-container {
    text-align: center;
    margin-top: 20px;
    padding: 20px;
    background: #fff;
    border-radius: 8px;
    display: none;
}

.qr-container.active {
    display: block;
}

.qr-container img {
    margin: 0 auto;
}

.copy-html-box {
    margin-top: 20px;
    padding: 15px;
    background: #1e1e1e;
    color: #d4d4d4;
    border-radius: 8px;
    font-family: monospace;
    font-size: 0.85rem;
    word-break: break-all;
    display: none;
}

.copy-html-box.active {
    display: block;
}

.copy-html-box a {
    color: var(--wa-green);
}

.tabs-wrapper {
    display: flex;
    overflow-x: auto;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 30px;
    scrollbar-width: none;
    padding: 0 20px;
}

.tabs-wrapper::-webkit-scrollbar {
    display: none;
}

@media (min-width: 992px) {
    .tabs-wrapper {
        flex-direction: column;
        border-bottom: none;
        padding: 0;
        gap: 5px;
    }
}

.tab-btn {
    background: none;
    border: none;
    padding: 15px 20px;
    color: var(--text-muted);
    cursor: pointer;
    font-weight: 600;
    font-size: 1rem;
    text-align: left;
    white-space: nowrap;
    transition: all 0.3s ease;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.tab-btn:hover {
    color: var(--text-color);
    background: rgba(0,0,0,0.03);
}

[data-theme="dark"] .tab-btn:hover {
    background: rgba(255,255,255,0.05);
}

.tab-btn.active {
    color: var(--wa-green);
    background: rgba(37, 211, 102, 0.1);
}

@media (max-width: 991px) {
    .tab-btn.active {
        background: none;
        border-bottom: 3px solid var(--wa-green);
        border-radius: 0;
    }
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background-color: var(--wa-dark-green);
    color: white;
    padding: 12px 24px;
    border-radius: 30px;
    z-index: 9999;
    transition: transform 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    opacity: 0;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
    font-weight: 500;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

[data-theme="dark"] .qr-container {
    background: var(--input-bg);
}

/* Button preview styling */
#btn-gen-preview a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    background-color: #25D366;
    color: #fff;
    border-radius: 8px;
    font-family: sans-serif;
    font-weight: bold;
    text-decoration: none;
    transition: background-color 0.3s;
}
#btn-gen-preview a:hover {
    background-color: #128C7E;
}

/* Validation Styles */
.form-control.is-invalid {
    border-color: #ff4d4d !important;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' width='12' height='12' fill='none' stroke='%23ff4d4d'%3e%3ccircle cx='6' cy='6' r='4.5'/%3e%3cpath stroke-linejoin='round' d='M5.8 3.6h.4L6 6.5z'/%3e%3ccircle cx='6' cy='8.2' r='.6' fill='%23ff4d4d' stroke='none'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right calc(0.375em + 0.1875rem) center;
    background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem);
}

.invalid-feedback {
    display: none;
    width: 100%;
    margin-top: 0.25rem;
    font-size: 0.8rem;
    color: #ff4d4d;
    font-weight: 500;
}

.form-control.is-invalid ~ .invalid-feedback {
    display: block;
}