*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: #1f2933;
    background-color: #f8fafc;
    line-height: 1.6;
}

a {
    color: #2563eb;
    text-decoration: none;
}

a:hover,
a:focus {
    text-decoration: underline;
}

.container {
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Header */
.site-header {
    background-color: #0f172a;
    color: #f8fafc;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.site-header .container {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    padding: 1rem 1rem;
}

.branding {
    display: flex;
    align-items: center;
    width: 100%;
    justify-content: space-between;
}

.brand {
    font-weight: 600;
    font-size: 1.25rem;
    color: inherit;
}

.menu-toggle {
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    gap: 0.3rem;
    width: 2.5rem;
    height: 2.5rem;
    background: none;
    border: 1px solid rgba(248, 250, 252, 0.3);
    border-radius: 0.375rem;
    padding: 0.5rem;
    cursor: pointer;
    color: inherit;
}

.menu-toggle__bar {
    width: 100%;
    height: 2px;
    background-color: currentColor;
    transition: transform 0.3s ease;
}

/* Navigation */
.site-nav {
    display: none;
    width: 100%;
}

.site-nav--open {
    display: block;
}

.site-nav ul {
    list-style: none;
    padding: 0;
    margin: 0.5rem 0 0 0;
}

.site-nav li {
    margin: 0.75rem 0;
}

.site-nav a {
    color: rgba(248, 250, 252, 0.85);
    font-weight: 500;
}

.site-nav a:hover,
.site-nav a:focus,
.site-nav a:active {
    color: #fff;
}

/* Main */
.site-main {
    padding: 2rem 1rem 3rem 1rem;
}

.breadcrumbs {
    font-size: 0.875rem;
    color: #64748b;
    margin-bottom: 1rem;
}

/* Footer */
.site-footer {
    background-color: #0f172a;
    color: rgba(248, 250, 252, 0.7);
    padding: 1.5rem 0;
    text-align: center;
    font-size: 0.875rem;
}

/* Card ve tablo örnek stilleri */
.card {
    background-color: #fff;
    border-radius: 0.75rem;
    padding: 1.5rem;
    box-shadow: 0 20px 25px -15px rgba(15, 23, 42, 0.25);
    margin-bottom: 1.5rem;
}

.table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1.5rem;
}

.table thead tr {
    background-color: #e2e8f0;
}

.table th,
.table td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid #cbd5f5;
}

.table tbody tr:hover {
    background-color: #f1f5f9;
}


.form-card {
    max-width: 480px;
    margin: 0 auto;
}

.form-subtitle {
    margin: 0 0 1.5rem 0;
    color: #475569;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    margin-bottom: 1.25rem;
}

.form-control {
    padding: 0.75rem 1rem;
    border: 1px solid #cbd5f5;
    border-radius: 0.5rem;
    background-color: #fff;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    font-size: 1rem;
}

.form-control:focus {
    border-color: #2563eb;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
    outline: none;
}

.field-validation {
    color: #dc2626;
    font-size: 0.875rem;
}

.validation-summary {
    color: #dc2626;
    background-color: rgba(220, 38, 38, 0.1);
    border-radius: 0.5rem;
    padding: 0.75rem 1rem;
    margin-bottom: 1.25rem;
}

.form-footer {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.remember-me {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.95rem;
    color: #334155;
}

.btn-submit {
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.75rem;
    font-weight: 600;
    font-size: 1rem;
    color: #ffffff;
    background: linear-gradient(135deg, #2563eb, #1e40af);
    border: none;
    border-radius: 0.75rem;
    cursor: pointer;
    transition: transform 0.15s ease, box-shadow 0.15s ease, filter 0.15s ease;
    box-shadow: 0 10px 20px -12px rgba(37, 99, 235, 0.55);
}

.btn-submit:hover,
.btn-submit:focus-visible {
    transform: translateY(-1px);
    box-shadow: 0 12px 24px -12px rgba(37, 99, 235, 0.65);
    filter: brightness(1.05);
    outline: none;
}

.btn-submit:active {
    transform: translateY(1px);
    box-shadow: 0 6px 16px -12px rgba(30, 64, 175, 0.7);
}

.btn-submit:disabled {
    cursor: not-allowed;
    opacity: 0.65;
    box-shadow: none;
    background: #94a3b8;
}

/* Responsive Breakpoints */
@media (min-width: 768px) {
    .site-header .container {
        flex-wrap: nowrap;
    }

    .branding {
        width: auto;
        margin-right: 2rem;
    }

    .menu-toggle {
        display: none;
    }

    .site-nav {
        display: block;
        width: auto;
    }

    .site-nav ul {
        display: flex;
        align-items: center;
        gap: 1.5rem;
        margin: 0;
    }

    .site-nav li {
        margin: 0;
    }
}

@media (min-width: 1024px) {
    .container {
        max-width: 1200px;
    }
}