/* Yetkin Online Tahsilat Sistemi - Modernized UI/UX */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&display=swap');

:root {
  /* Navy Blue Palette */
  --primary: #1e3a8a;
  --primary-dark: #172554;
  --primary-light: #3b82f6;
  
  /* Silver Palette */
  --silver-light: #f1f5f9;
  --silver: #cbd5e1;
  --silver-dark: #94a3b8;
  --silver-gradient: linear-gradient(135deg, #e2e8f0, #94a3b8);
  
  /* Accent Colors */
  --accent: #2563eb;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  
  /* Gradients */
  --grad-navy: linear-gradient(135deg, #1e3a8a, #172554);
  --grad-silver: linear-gradient(135deg, #f8fafc, #cbd5e1);
  --grad-success: linear-gradient(135deg, #10b981, #059669);
  --grad-info: linear-gradient(135deg, #3b82f6, #1d4ed8);
  
  /* UI Elements */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-md: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --glass: rgba(255, 255, 255, 0.8);
  --glass-border: rgba(255, 255, 255, 0.3);
}

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

body {
    background-color: #f8fafc;
    color: #1e293b;
    font-size: 16px;
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

/* Background Animation */
body::before {
    content: '';
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: 
        radial-gradient(circle at 0% 0%, rgba(30, 58, 138, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 100% 100%, rgba(148, 163, 184, 0.1) 0%, transparent 50%);
    z-index: -1;
}

/* Auth Overlay - Glassmorphism */
.password-overlay {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(12px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.password-card {
    background: var(--glass);
    padding: 3rem;
    border-radius: 2rem;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--glass-border);
    width: 100%;
    max-width: 450px;
    text-align: center;
    animation: fadeInScale 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes fadeInScale {
    from { opacity: 0; transform: scale(0.9) translateY(20px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

.password-logo {
    width: 90px;
    height: auto;
    margin-bottom: 1.5rem;
    filter: drop-shadow(0 0 15px rgba(30, 58, 138, 0.2));
}

.password-header h2 {
    color: var(--primary);
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}

.password-header p {
    color: var(--silver-dark);
    margin-bottom: 2rem;
}

.password-form input {
    width: 100%;
    padding: 1.25rem;
    border-radius: 1rem;
    border: 2px solid var(--silver);
    background: white;
    color: var(--primary-dark);
    font-size: 2rem;
    text-align: center;
    letter-spacing: 0.5rem;
    margin-bottom: 1.5rem;
    outline: none;
    transition: all 0.3s ease;
}

.password-form input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(30, 58, 138, 0.1);
}

/* Header */
.header {
    background: var(--grad-navy);
    padding: 1.25rem 2.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: white;
    box-shadow: var(--shadow-lg);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.header-logo img {
    height: 45px;
    filter: brightness(0) invert(1);
    transition: transform 0.3s ease;
}

.header-logo:hover img {
    transform: rotate(10deg);
}

.header-logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.025em;
}

/* Buttons */
.btn, .panel-btn {
    padding: 0.75rem 1.5rem;
    border-radius: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    text-decoration: none;
    font-size: 0.95rem;
}

.btn-primary, .panel-btn {
    background: var(--grad-navy);
    color: white;
    box-shadow: 0 4px 6px -1px rgba(30, 58, 138, 0.3);
}

.btn-danger {
    background: var(--grad-navy); /* Base navy */
    position: relative;
    overflow: hidden;
}

.btn-danger::after {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--danger);
    opacity: 0.8;
    z-index: -1;
}

.btn-danger {
    background: linear-gradient(135deg, #ef4444, #b91c1c);
    color: white;
}

.btn-warning {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: white;
}

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

.btn-silver {
    background: var(--grad-silver);
    color: var(--primary-dark);
    border: 1px solid var(--silver);
}

.btn-primary:hover, .panel-btn:hover, .btn-danger:hover, .btn-warning:hover, .btn-info:hover, .btn-silver:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.2);
    filter: brightness(1.1);
}

/* Dashboard Cards */
.container {
    max-width: 1300px;
    margin: 2rem auto;
    padding: 0 1.5rem;
}

.dashboard {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.card {
    background: white;
    border-radius: 1.5rem;
    padding: 2rem;
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(226, 232, 240, 0.8);
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 4px; height: 100%;
}

.card.bugunTahsilat::before { background: var(--success); }
.card.haftalikTahsilat::before { background: var(--primary-light); }
.card.aylikTahsilat::before { background: var(--primary); }

.card-title {
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--silver-dark);
    font-weight: 700;
    margin-bottom: 1rem;
}

.card-value {
    font-size: 2.75rem;
    font-weight: 800;
    color: var(--primary-dark);
    letter-spacing: -0.05em;
}

/* Tables & Containers */
.table-container, .form-container {
    background: white;
    border-radius: 1.5rem;
    padding: 2.5rem;
    box-shadow: var(--shadow-md);
    margin-bottom: 2.5rem;
    border: 1px solid rgba(226, 232, 240, 0.8);
    transition: all 0.3s ease;
}

.table-title, .form-title {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--primary-dark);
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.table-title::after {
    content: '';
    flex: 1;
    height: 2px;
    background: var(--grad-silver);
    margin-left: 1rem;
}

table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0 0.75rem;
}

th {
    text-align: left;
    padding: 1rem 1.5rem;
    color: var(--silver-dark);
    font-weight: 600;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

td {
    padding: 1.25rem 1.5rem;
    background: #fdfdfd;
    border-top: 1px solid #f1f5f9;
    border-bottom: 1px solid #f1f5f9;
}

td:first-child {
    border-left: 1px solid #f1f5f9;
    border-radius: 1rem 0 0 1rem;
}

td:last-child {
    border-right: 1px solid #f1f5f9;
    border-radius: 0 1rem 1rem 0;
}

tr:hover td {
    background: #f8fafc;
    border-color: var(--silver);
}

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

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 0.5rem;
}

.form-control, .form-select {
    width: 100%;
    padding: 1rem 1.25rem;
    border-radius: 0.75rem;
    border: 2px solid #e2e8f0;
    background: #fafafa;
    transition: all 0.3s ease;
    font-size: 1rem;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary);
    background: white;
    outline: none;
    box-shadow: 0 0 0 4px rgba(30, 58, 138, 0.1);
}

/* Modern Badges */
.yuzde-yuksek { color: var(--success); font-weight: 700; background: rgba(16, 185, 129, 0.1); padding: 0.25rem 0.75rem; border-radius: 2rem; }
.yuzde-orta { color: var(--warning); font-weight: 700; background: rgba(245, 158, 11, 0.1); padding: 0.25rem 0.75rem; border-radius: 2rem; }
.yuzde-dusuk { color: var(--danger); font-weight: 700; background: rgba(239, 68, 68, 0.1); padding: 0.25rem 0.75rem; border-radius: 2rem; }

/* Progress Bars */
.yuzde-bar-container {
    width: 100%;
    background: #f1f5f9;
    border-radius: 1rem;
    height: 12px;
    overflow: hidden;
}

.yuzde-bar {
    height: 100%;
    background: var(--grad-navy);
    border-radius: 1rem;
    transition: width 1s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Responsive */
@media (max-width: 768px) {
    .header { padding: 1rem; flex-direction: column; gap: 1rem; }
    .container { margin: 1rem auto; }
    .table-container, .form-container { padding: 1.5rem; }
    td, th { padding: 0.75rem; font-size: 0.85rem; }
    .card-value { font-size: 2rem; }
}

/* Custom Utilities */
.empty-state {
    padding: 4rem;
    text-align: center;
    color: var(--silver-dark);
}

footer {
    padding: 3rem 0;
    border-top: 1px solid var(--silver);
    text-align: center;
    color: var(--silver-dark);
    font-weight: 500;
}

/* Modal Styling */
.modal {
    backdrop-filter: blur(8px);
}

.modal-content {
    background: white;
    border-radius: 2rem;
    padding: 2.5rem;
    border: 1px solid var(--silver);
    animation: slideUp 0.4s ease;
}

@keyframes slideUp {
    from { transform: translateY(30px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

/* Silver Metallic look for specific components */
.silver-panel {
    background: var(--grad-silver);
    border: 1px solid #cbd5e1;
    color: var(--primary-dark);
}

/* Success/Error Toast Enhancements */
[id^="toast-container"] {
    padding: 20px;
}