/* Theme */
:root {
    --color-primary: #f97316;
    --color-primary-dark: #ea6b0a;
    --color-primary-light: #fff7ed;
    --color-danger: #ef4444;
    --color-danger-light: #fef2f2;
    --color-success: #22c55e;
    --color-success-light: #f0fdf4;
    --color-text: #1e293b;
    --color-text-muted: #64748b;
    --color-border: #e2e8f0;
    --color-border-focus: #f97316;
    --color-bg: #f8fafc;
    --color-card: #fff;
    --color-nav-bg: #fff;

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-full: 9999px;

    --shadow-card: 0 1px 3px rgba(0, 0, 0, .08), 0 4px 16px rgba(0, 0, 0, .06);
    --shadow-input: 0 0 0 3px rgba(249, 115, 22, .18);

    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --transition: all .2s ease;
}

/* Reset and base */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    display: flex;
    min-height: 100vh;
    flex-direction: column;
    background-color: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-sans);
    line-height: 1.6;
}

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

a:hover {
    text-decoration: underline;
}

/* Shared page layout */
.page-shell {
    flex: 1;
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 40px 16px 60px;
}

.page-shell--narrow {
    max-width: 860px;
}

.page-header {
    margin-bottom: 36px;
    text-align: center;
}

.page-title {
    color: var(--color-text);
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -.5px;
}

.page-subtitle {
    margin-top: 6px;
    color: var(--color-text-muted);
    font-size: .95rem;
}

/* Navbar */
.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    height: 64px;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    border-bottom: 1px solid var(--color-border);
    background: var(--color-nav-bg);
    box-shadow: 0 1px 4px rgba(0, 0, 0, .06);
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}

.navbar-brand:hover {
    text-decoration: none;
}

.brand-icon {
    font-size: 1.6rem;
}

.brand-name {
    padding: 4px 0;
    border-bottom: 2px solid transparent;
    color: var(--color-primary);
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -.3px;
    line-height: 1;
    transition: var(--transition);
}

.navbar-brand:hover .brand-name,
.brand-name.active {
    border-bottom-color: var(--color-primary);
}

.navbar-links {
    display: flex;
    flex: 1;
    align-items: center;
    justify-content: flex-end;
    gap: 24px;
    margin-left: 24px;
    list-style: none;
}

.navbar-links a {
    padding: 4px 0;
    border-bottom: 2px solid transparent;
    color: var(--color-text-muted);
    font-size: .9rem;
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition);
}

.navbar-links a:hover,
.navbar-links a.active {
    border-bottom-color: var(--color-primary);
    color: var(--color-primary);
}

.navbar-logout-form {
    margin: 0;
}

.navbar-logout-btn {
    padding: 4px 0;
    border: 0;
    border-bottom: 2px solid transparent;
    background: transparent;
    color: var(--color-text-muted);
    cursor: pointer;
    font-family: inherit;
    font-size: .9rem;
    font-weight: 500;
    line-height: inherit;
    transition: var(--transition);
}

.navbar-logout-btn:hover,
.navbar-logout-btn:focus-visible {
    border-bottom-color: var(--color-primary);
    color: var(--color-primary);
}

/* Shared surfaces and forms */
.form-container {
    padding: 40px 48px;
    border-radius: var(--radius-lg);
    background: var(--color-card);
    box-shadow: var(--shadow-card);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-top: 20px;
}

.form-group:first-child {
    margin-top: 16px;
}

label {
    color: var(--color-text);
    font-size: .875rem;
    font-weight: 600;
}

input[type="text"],
input[type="number"],
input[type="email"],
input[type="password"],
textarea,
select {
    width: 100%;
    padding: 10px 14px;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-md);
    outline: none;
    background: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-sans);
    font-size: .9rem;
    transition: var(--transition);
}

textarea {
    resize: vertical;
}

input[type="text"]:focus,
input[type="number"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
textarea:focus,
select:focus {
    border-color: var(--color-border-focus);
    background: #fff;
    box-shadow: var(--shadow-input);
}

input::placeholder,
textarea::placeholder {
    color: #b0bec5;
}

.select-wrapper {
    position: relative;
}

.select-wrapper::after {
    position: absolute;
    top: 50%;
    right: 14px;
    width: 10px;
    height: 10px;
    transform: translateY(-50%);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 10 6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%2364748B'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-size: contain;
    content: '';
    pointer-events: none;
}

.select-wrapper select {
    padding-right: 36px;
    appearance: none;
    cursor: pointer;
    -webkit-appearance: none;
}

.form-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 16px;
    margin-top: 40px;
    padding-top: 28px;
    border-top: 1px solid var(--color-border);
}

/* Alerts and validation */
.alert {
    margin-bottom: 28px;
    padding: 14px 18px;
    border-radius: var(--radius-md);
    font-size: .9rem;
    font-weight: 500;
}

.alert-success {
    border: 1px solid #bbf7d0;
    background: var(--color-success-light);
    color: #15803d;
}

.alert-error {
    border: 1px solid #fecaca;
    background: var(--color-danger-light);
    color: #b91c1c;
}

.field-error {
    margin: 7px 0 0;
    color: #b91c1c;
    font-size: .78rem;
    font-weight: 500;
}

input.input-error,
textarea.input-error,
select.input-error {
    border-color: var(--color-danger) !important;
    background: var(--color-danger-light);
}

input.input-error:focus,
textarea.input-error:focus,
select.input-error:focus {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, .18);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 11px 28px;
    border: 1.5px solid transparent;
    border-radius: var(--radius-md);
    background: transparent;
    color: inherit;
    cursor: pointer;
    font-family: var(--font-sans);
    font-size: .9rem;
    font-weight: 600;
    text-decoration: none;
    transition: color 180ms ease, background 180ms ease, border-color 180ms ease,
    transform 180ms ease, box-shadow 180ms ease, opacity 180ms ease;
}

.btn:hover,
.btn:focus-visible {
    text-decoration: none;
}

.btn:active {
    transform: translateY(0) scale(.97);
}

.btn:focus-visible {
    outline: 3px solid rgba(249, 115, 22, .25);
    outline-offset: 3px;
}

.btn:disabled {
    cursor: not-allowed;
    opacity: .6;
    pointer-events: none;
}

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

.btn--primary:hover,
.btn--primary:focus-visible {
    border-color: var(--color-primary-dark);
    background: var(--color-primary-dark);
    color: #fff;
}

.btn--secondary {
    border-color: var(--color-border);
    background: transparent;
    color: var(--color-text-muted);
}

.btn--secondary:hover,
.btn--secondary:focus-visible {
    border-color: var(--color-text-muted);
    color: var(--color-text);
}

.btn--outline-primary {
    border-color: var(--color-primary);
    background: #fff;
    color: var(--color-primary);
}

.btn--outline-primary:hover,
.btn--outline-primary:focus-visible {
    background: var(--color-primary-light);
    color: var(--color-primary-dark);
}

.btn--pill {
    padding: 11px 18px;
    border-radius: var(--radius-full);
}

.btn--block {
    width: 100%;
}

.btn--wide {
    min-width: 160px;
}

.btn--small {
    padding: 7px 16px;
    font-size: .83rem;
}

.icon-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    padding: 0;
    border: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, .94);
    cursor: pointer;
    font: inherit;
    transition: color 180ms ease, background 180ms ease, transform 180ms ease,
    box-shadow 180ms ease;
}

.icon-button:hover,
.icon-button:focus-visible {
    background: #fff;
    text-decoration: none;
    transform: translateY(-1px);
}

.icon-button:focus-visible {
    outline: 3px solid currentColor;
    outline-offset: 3px;
}

.icon-button--edit {
    color: #2563eb;
}

.icon-button--danger {
    color: #dc2626;
}

/* Utilities and footer */
.hidden {
    display: none !important;
}

.footer {
    margin-top: auto;
    padding: 24px 16px;
    border-top: 1px solid var(--color-border);
    background: var(--color-card);
    color: var(--color-text-muted);
    font-size: .82rem;
    text-align: center;
}

@media (max-width: 768px) {
    .navbar {
        height: auto;
        min-height: 64px;
        flex-wrap: wrap;
        padding: 10px 16px 0;
    }

    .navbar-links {
        flex-basis: 100%;
        justify-content: flex-start;
        gap: 18px;
        margin-left: 0;
        padding: 8px 0 10px;
        overflow-x: auto;
        scrollbar-width: thin;
        white-space: nowrap;
    }

    .form-container {
        padding: 28px 20px;
    }

    .page-title {
        font-size: 1.6rem;
    }
}

@media (max-width: 540px) {
    .form-actions {
        align-items: stretch;
        flex-direction: column-reverse;
    }

    .form-actions .btn {
        width: 100%;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
    }
}