/* ==========================================================================
   Personal Finance Tracker - Professional "Analytics" Theme
   Version: 4.3 (Final, Organized & Fully Responsive)
   ========================================================================== */

/* --- 1. Core Setup: Variables & Font --- */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600;700&display=swap');

:root {
    --bg-color: #f4f7fa;
    --card-bg-color: #ffffff;
    --font-color: #344054;
    --font-color-light: #667085;
    --accent-color: #4A6CFD;
    --accent-color-dark: #3556FD;
    --border-color: #eaecf0;
    --shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    --success-color: #12b76a;
    --error-color: #f04438;
    --warning-color: #f79009;
    --premium-color: #8E54E9;
    --info-color: #3498db;
    --font-family: 'Poppins', sans-serif;
    --transition-speed: 0.2s;
}

/* --- 2. Base & Layout Styles --- */
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: var(--font-family); color: var(--font-color); background-color: var(--bg-color); line-height: 1.6; }
.container { max-width: 1400px; margin: 30px auto; padding: 0 30px; }
main.container { animation: fadeIn 0.5s ease-out; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

/* --- 3. Header & Navigation --- */
.main-header { background: var(--card-bg-color); padding: 10px 0; border-bottom: 1px solid var(--border-color); position: sticky; top: 0; z-index: 1000; }
.main-header .container { display: flex; justify-content: space-between; align-items: center; margin-top: 0; margin-bottom: 0; }
.logo { font-size: 1.6em; font-weight: 700; color: var(--accent-color); text-decoration: none; z-index: 10; position: relative; }
.hamburger-menu { display: block; background: none; border: none; cursor: pointer; padding: 10px; z-index: 1002; }
.hamburger-bar { display: block; width: 25px; height: 3px; margin: 5px 0; background-color: var(--font-color); border-radius: 3px; transition: all var(--transition-speed) ease-in-out; }
nav.main-nav { position: fixed; top: 0; left: -100%; width: 280px; height: 100%; background-color: var(--card-bg-color); box-shadow: 5px 0px 15px rgba(0,0,0,0.05); transition: left var(--transition-speed) ease-in-out; z-index: 1001; display: flex; flex-direction: column; border-right: 1px solid var(--border-color); }
nav.main-nav.is-active { left: 0; }
nav.main-nav ul { list-style: none; padding: 80px 20px 30px 20px; overflow-y: auto; flex-grow: 1; }
nav.main-nav ul a { display: block; padding: 10px 15px; color: var(--font-color); text-decoration: none; font-weight: 500; font-size: 1.1em; border-radius: 8px; transition: all var(--transition-speed) ease; }
nav.main-nav ul a:hover { color: var(--accent-color); background-color: #f0f2f5; transform: translateX(5px); }
.nav-divider { height: 1px; width: 100%; background-color: var(--border-color); margin: 15px 0; }
nav.guest-nav ul { list-style: none; display: flex; align-items: center; gap: 15px; }
.admin-link { color: var(--accent-color) !important; font-weight: 700 !important; }

/* --- 4. General Components --- */
.card { background: var(--card-bg-color); border: 1px solid var(--border-color); border-radius: 16px; padding: 24px; box-shadow: var(--shadow); margin-top: 24px; transition: all var(--transition-speed) ease; }
.card:hover { box-shadow: 0 10px 20px rgba(0,0,0,0.07); transform: translateY(-5px); }
.btn { padding: 10px 18px; border: 1px solid var(--accent-color); border-radius: 8px; color: #fff; background: var(--accent-color); font-weight: 600; cursor: pointer; text-decoration: none; display: inline-flex; align-items: center; justify-content: center; gap: 8px; transition: all var(--transition-speed) ease; }
.btn:hover { background: var(--accent-color-dark); border-color: var(--accent-color-dark); transform: translateY(-2px); }
.btn-secondary { background: var(--card-bg-color); color: var(--font-color); border-color: #d0d5dd; }
.btn-secondary:hover { background: #f9fafb; }
.btn-edit, .btn-delete, .btn-cancel { padding: 8px 12px; border: none; border-radius: 6px; color: #fff; cursor: pointer; text-decoration: none; transition: opacity 0.2s ease; }
.btn-edit:hover, .btn-delete:hover, .btn-cancel:hover { opacity: 0.85; }
.btn-edit { background-color: var(--info-color); }
.btn-delete { background-color: var(--error-color); }
.btn-cancel { background-color: #6c757d; }
form { margin-top: 20px; }
form label { display: block; margin-bottom: 8px; font-weight: 500; font-size: 0.9em; }
form input, form select, form textarea { width: 100%; padding: 10px 14px; margin-bottom: 16px; background-color: var(--card-bg-color); border: 1px solid #d0d5dd; border-radius: 8px; color: var(--font-color); font-family: var(--font-family); box-shadow: 0 1px 2px rgba(0,0,0,0.05); transition: all var(--transition-speed) ease; }
form textarea { resize: vertical; min-height: 80px; }
form input:focus, form select:focus, form textarea:focus { outline: none; border-color: var(--accent-color); box-shadow: 0 0 0 3px rgba(74, 108, 253, 0.2); }
form select { -webkit-appearance: none; -moz-appearance: none; appearance: none; background-image: url('data:image/svg+xml;charset=US-ASCII,%3Csvg%20width%3D%2220%22%20height%3D%2220%22%20xmlns%3D%22http%3A//www.w3.org/2000/svg%22%3E%3Cpath%20d%3D%22M5%208l5%205%205-5z%22%20fill%3D%22%23667085%22/%3E%3C/svg%3E'); background-repeat: no-repeat; background-position: right 14px center; }
form small { display: block; text-align: left; margin-top: -12px; margin-bottom: 16px; color: var(--font-color-light); font-size: 0.85em; }

/* --- 5. Page-Specific Styles --- */
.welcome-header { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 20px; padding-bottom: 20px; border-bottom: 1px solid var(--border-color); }
.welcome-header h1 { font-size: 1.8em; font-weight: 600; }
.quick-actions { display: flex; gap: 10px; }
.kpi-container { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 24px; margin-top: 24px; }
.kpi-item { background: var(--card-bg-color); border: 1px solid var(--border-color); border-radius: 16px; padding: 20px; box-shadow: var(--shadow); transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease; }
.kpi-item:hover { transform: translateY(-5px); box-shadow: 0 8px 16px rgba(0,0,0,0.07); }
.kpi-item h4 { font-weight: 500; color: var(--font-color-light); font-size: 0.9em; margin-bottom: 8px; }
.kpi-value { font-size: 1.8em; font-weight: 600; }
.kpi-value span { font-size: 0.6em; color: var(--font-color-light); font-weight: 500; }
.text-success { color: var(--success-color) !important; }
.text-danger { color: var(--error-color) !important; }
.dashboard-grid { display: grid; grid-template-columns: 1fr; gap: 24px; }
.section-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.card h3 { font-size: 1.2em; margin-bottom: 20px; }
.chart-wrapper { position: relative; height: 300px; }
.account-list, .loan-list { list-style: none; padding: 0; }
.account-item, .loan-item { display: flex; justify-content: space-between; align-items: center; padding: 15px 0; border-bottom: 1px solid var(--border-color); }
.account-item:last-child, .loan-item:last-child { border-bottom: none; }
.account-info strong, .loan-info strong { font-weight: 600; }
.account-info small, .loan-info small { color: var(--font-color-light); font-size: 0.85em; }
.account-balance { font-weight: 600; }
.table-responsive { overflow-x: auto; }
.transaction-table { width: 100%; border-collapse: collapse; }
.transaction-table th, .transaction-table td { padding: 12px 15px; text-align: left; border-bottom: 1px solid var(--border-color); vertical-align: middle; }
.transaction-table thead th { font-weight: 600; color: var(--font-color-light); font-size: 0.85em; text-transform: uppercase; }
.badge { padding: 4px 10px; border-radius: 16px; font-size: 0.8em; font-weight: 500; }
.badge.type-income { background-color: #ecfdf3; color: #027a48; }
.badge.type-expense { background-color: #fef3f2; color: #b42318; }
.badge.plan-free { background-color: #f0f9ff; color: #026aa2; }
.badge.plan-premium { background-color: #f9f5ff; color: #6941c6; }
.filter-form { display: flex; flex-wrap: wrap; align-items: flex-end; gap: 20px; margin-top: 0; }
.filter-form .form-group { margin-bottom: 0; flex-grow: 1; }
.loan-progress { display: flex; align-items: center; gap: 15px; }
.progress-bar-container { flex-grow: 1; background-color: #e9ecef; border-radius: 10px; height: 10px; }
.progress-bar { height: 100%; border-radius: 10px; background-color: var(--success-color); transition: width 0.5s ease-in-out; }
.progress-percentage { font-weight: 600; font-size: 0.9em; min-width: 60px; text-align: right; }

/* --- LANDING PAGE STYLES --- */
.section-title { font-size: 2.2em; font-weight: 700; color: var(--font-color); text-align: center; margin-bottom: 15px; }
.section-subtitle { font-size: 1.1em; color: var(--font-color-light); text-align: center; max-width: 600px; margin: 0 auto 50px auto; }
.btn.btn-primary { padding: 15px 35px; font-size: 1.1em; border-radius: 12px; }
.hero-section-v3 { padding: 80px 0; overflow: hidden; background: var(--card-bg-color); }
.hero-container { display: grid; grid-template-columns: 1fr; align-items: center; gap: 40px; }
.hero-text h1 { font-size: 3.5em; font-weight: 700; color: var(--font-color); line-height: 1.2; margin-bottom: 20px; }
.hero-text h1 .type-effect { color: var(--accent-color); }
.hero-text p { font-size: 1.2em; max-width: 500px; margin-bottom: 40px; color: var(--font-color-light); }
.hero-image img { max-width: 100%; height: auto; border-radius: 20px; box-shadow: 0 20px 40px rgba(0,0,0,0.1); }
.features-section { padding: 80px 0; }
.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 30px; }
.feature-icon-wrapper { width: 64px; height: 64px; border-radius: 16px; background: #f0f2ff; display: flex; align-items: center; justify-content: center; margin-bottom: 25px; transition: all 0.3s ease; }
.feature-icon { font-size: 2.5em; color: var(--accent-color); }
.feature-card { text-align: left; }
.feature-card h3 { font-size: 1.3em; color: var(--font-color); margin-bottom: 10px; }
.feature-card p { color: var(--font-color-light); }
.feature-card:hover .feature-icon-wrapper { transform: scale(1.1) rotate(10deg); box-shadow: 0 10px 20px rgba(74,108,253,0.2); }
.screenshots-section { background-color: var(--card-bg-color); padding: 80px 0; }
.screenshot-gallery { display: grid; grid-template-columns: 1fr; gap: 20px; margin-top: 30px; }
.screenshot-gallery img { width: 100%; border-radius: 12px; box-shadow: 0 10px 20px rgba(0,0,0,0.1); }
.testimonials-section { padding: 80px 0; }
.testimonial-slider { padding-bottom: 50px; }
.testimonial-card { padding: 30px; border: 1px solid var(--border-color); border-radius: 16px; background-color: var(--card-bg-color); height: auto; box-shadow: var(--shadow); }
.testimonial-card .author { margin-bottom: 15px; display: flex; align-items: center; gap: 15px; font-weight: 600; }
.testimonial-card .author img { width: 48px; height: 48px; border-radius: 50%; }
.testimonial-card .author small { color: var(--font-color-light); font-weight: 500; display: block; }
.testimonial-card blockquote { font-size: 1.1em; color: var(--font-color); }
.swiper-pagination-bullet-active { background-color: var(--accent-color); }
.faq-section { padding: 80px 0; }
.faq-item { border-bottom: 1px solid var(--border-color); padding: 20px 0; }
.faq-item summary { font-weight: 600; cursor: pointer; display: flex; justify-content: space-between; align-items: center; }
.faq-item summary::after { content: '+'; font-size: 1.5em; color: var(--accent-color); transition: transform 0.3s ease; }
.faq-item[open] summary::after { content: '−'; transform: rotate(180deg); }
.faq-item p { color: var(--font-color-light); margin-top: 15px; }
.company-section { background: linear-gradient(45deg, var(--accent-color), var(--accent-color-dark)); color: #fff; padding: 60px 0; text-align: center; }
.company-logo { max-width: 150px; height: auto; margin-bottom: 20px; }
.company-info h2 { font-size: 1.8em; margin-bottom: 15px; }
.company-info p { max-width: 600px; margin: 0 auto 30px auto; opacity: 0.9; }
.company-info .btn-secondary { background: #fff; color: var(--accent-color); border-color: #fff; }
.contact-section { background-color: var(--card-bg-color); padding: 60px 0; }
.centered-form { margin: 0 auto; max-width: 600px; }
.cta-section { padding: 80px 0; text-align: center; }

/* --- 6. Utilities & Modals --- */
.success, .error { padding: 15px; margin-bottom: 20px; border-radius: 8px; color: #fff; font-weight: 500; }
.success { background-color: var(--success-color); }
.error { background-color: var(--error-color); }
.error-text { color: var(--error-color); font-size: 0.9em; margin-top: -12px; margin-bottom: 12px; }
.empty-state { text-align: center; padding: 40px 20px; color: var(--font-color-light); }
.modal-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background-color: rgba(52, 64, 84, 0.7); backdrop-filter: blur(8px); z-index: 2000; display: flex; justify-content: center; align-items: center; opacity: 0; visibility: hidden; transition: all var(--transition-speed) ease; }
.modal-overlay.is-visible { opacity: 1; visibility: visible; }
.modal-content { transform: scale(0.95); transition: all var(--transition-speed) ease; }
.modal-overlay.is-visible .modal-content { transform: scale(1); }
.modal-close { position: absolute; top: 16px; right: 20px; background: none; border: none; font-size: 1.8em; cursor: pointer; color: var(--font-color-light); }

/* --- 7. Responsive Adjustments --- */
@media (min-width: 992px) {
    .dashboard-grid { grid-template-columns: 1fr 1fr; }
}
@media (min-width: 768px) {
    .hero-container { grid-template-columns: 1fr 1fr; text-align: left; }
    .hero-text h1, .hero-text p { margin-left: 0; margin-right: 0; }
    .screenshot-gallery { grid-template-columns: repeat(3, 1fr); }
    .developer-content { flex-direction: row; text-align: left; gap: 40px; }
    .developer-socials { justify-content: flex-start; }
}
@media (max-width: 768px) {
    .container { padding: 0 15px; }
    .welcome-header { flex-direction: row; align-items: center; justify-content: space-between; }
    .welcome-header h1 { font-size: 1.2em; }
    .kpi-container { grid-template-columns: repeat(2, 1fr); gap: 15px; }
    .kpi-item { padding: 15px; }
    .kpi-value { font-size: 1.5em; }
    .dashboard-grid { grid-template-columns: 1fr; }
    .quick-actions .btn .btn-text, .section-header .btn .btn-text { display: none; }
    .quick-actions .btn, .section-header .btn { width: 44px; height: 44px; border-radius: 50%; padding: 0; gap: 0; }
    .btn i { margin-right: 0; font-size: 1.5em; }
    .quick-actions { width: auto; }
    .hero-text h1 { font-size: 2.2em; }
    .section-title { font-size: 1.8em; }
    .developer-content { flex-direction: column; text-align: center; gap: 20px; }
    .developer-socials { justify-content: center; }
}