/* Pet Adorable Life - 導覽頁面樣式 */

:root {
    /* Color tokens */
    --cream: #FDF8F3;
    --sand: #EDE4DB;
    --terracotta: #C97B5C;
    --sage: #7D9B76;
    --forest: #3D5A4A;
    --charcoal: #2C2C2C;
    --soft-shadow: 0 4px 24px rgba(61, 90, 74, 0.08);

    /* Spacing scale */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;

    /* Typography scale */
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 2rem;

    /* Border-radius tokens */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-full: 9999px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Utility Classes */
.hidden {
    display: none !important;
}

/* ========== Unified Button System ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    font-family: inherit;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s ease-in-out;
    line-height: 1.5;
}

.btn:focus-visible {
    outline: 3px solid var(--sage);
    outline-offset: 2px;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* Variants */
.btn-primary {
    color: white;
    background: var(--sage);
}

.btn-primary:hover:not(:disabled) {
    background: var(--forest);
    transform: translateY(-1px);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
}

.btn-secondary {
    color: var(--charcoal);
    background: transparent;
    border: 1px solid rgba(125, 155, 118, 0.4);
}

.btn-secondary:hover:not(:disabled) {
    background: rgba(125, 155, 118, 0.1);
    border-color: var(--sage);
}

.btn-danger {
    color: white;
    background: var(--terracotta);
}

.btn-danger:hover:not(:disabled) {
    background: #b86a4d;
}

.btn-accent {
    color: var(--charcoal);
    background: #FFEA98;
    box-shadow: 0 4px 12px rgba(255, 234, 152, 0.5);
}

.btn-accent:hover:not(:disabled) {
    background: #FFDD55;
    transform: translateY(-2px);
}

/* Sizes */
.btn-sm {
    padding: var(--space-sm) var(--space-md);
    font-size: var(--text-sm);
    border-radius: var(--radius-sm);
}

.btn-lg {
    padding: var(--space-md) var(--space-xl);
    font-size: var(--text-lg);
    border-radius: var(--radius-md);
}

/* Icon buttons (like edit/remove) */
.btn-icon {
    width: 28px;
    height: 28px;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    color: var(--charcoal);
    background: transparent;
    border-radius: 6px;
    opacity: 0.5;
}

.btn-icon:hover {
    opacity: 1;
}

.btn-icon.edit:hover {
    background: rgba(125, 155, 118, 0.2);
    color: var(--forest);
}

.btn-icon.remove:hover {
    background: rgba(201, 123, 92, 0.15);
    color: var(--terracotta);
}

/* ========== Unified Form Component System ========== */
.form-group {
    margin-bottom: 1.25rem;
}

.form-label,
.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--charcoal);
    margin-bottom: 0.4rem;
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 0.95rem;
    font-family: inherit;
    border: 1px solid rgba(125, 155, 118, 0.3);
    border-radius: 10px;
    background: var(--cream);
    color: var(--charcoal);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--sage);
    box-shadow: 0 0 0 3px rgba(125, 155, 118, 0.1);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--charcoal);
    opacity: 0.5;
}

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

.form-hint {
    display: block;
    font-size: 0.8rem;
    color: var(--charcoal);
    opacity: 0.65;
    margin-top: 0.25rem;
}

.form-error {
    display: block;
    font-size: 0.85rem;
    color: var(--terracotta);
    margin-top: 0.25rem;
}

/* ========== Modal Component ========== */
.modal-overlay {
    display: flex;
    align-items: center;
    justify-content: center;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
}

.modal-content {
    background: white;
    border-radius: var(--radius-md);
    padding: var(--space-xl);
    width: min(480px, 90vw);
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 8px 40px rgba(61, 90, 74, 0.15);
}

/* Skip-to-content link */
.skip-to-content {
    position: absolute;
    top: -9999px;
    left: -9999px;
    z-index: 999;
    padding: 0.75rem 1rem;
    background: var(--forest);
    color: white;
    text-decoration: none;
    border-radius: 4px;
    font-weight: 500;
}

.skip-to-content:focus {
    top: 1rem;
    left: 1rem;
}

body {
    font-family: "Noto Sans TC", "Outfit", sans-serif;
    background: var(--cream);
    color: var(--charcoal);
    line-height: 1.6;
    min-height: 100vh;
}

/* 導覽列 */
.nav-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background: rgba(253, 248, 243, 0.9);
    backdrop-filter: blur(12px);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid rgba(125, 155, 118, 0.2);
}

.logo {
    font-family: "Outfit", sans-serif;
    font-weight: 600;
    font-size: 1.25rem;
    color: var(--forest);
    text-decoration: none;
    letter-spacing: 0.02em;
}

.nav-toggle {
    display: none;
    border: 1px solid rgba(125, 155, 118, 0.24);
    background: rgba(255, 255, 255, 0.72);
    border-radius: 12px;
    padding: 0.6rem;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 4px;
    box-shadow: 0 8px 20px rgba(61, 90, 74, 0.08);
}

.nav-toggle span {
    display: block;
    width: 18px;
    height: 2px;
    border-radius: 999px;
    background: var(--forest);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    color: var(--charcoal);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.2s;
}

.nav-links a.active {
    color: var(--forest);
}

.nav-icon {
    width: 1rem;
    height: 1rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--sage);
    flex-shrink: 0;
}

.nav-icon svg {
    width: 100%;
    height: 100%;
}

.nav-links a:hover {
    color: var(--terracotta);
}

.nav-links a:hover .nav-icon,
.nav-links a.active .nav-icon {
    color: currentColor;
}

@media (max-width: 820px) {
    .nav-bar {
        padding: 0.9rem 1rem;
        flex-wrap: wrap;
        gap: 0.85rem;
    }

    .logo {
        font-size: 1.05rem;
        max-width: calc(100% - 64px);
    }

    .nav-toggle {
        display: inline-flex;
        margin-left: auto;
    }

    .nav-links {
        display: none;
        width: 100%;
        flex-direction: column;
        gap: 0.45rem;
        padding: 0.9rem;
        margin: 0;
        border-radius: 18px;
        background: rgba(255, 255, 255, 0.88);
        box-shadow: 0 14px 32px rgba(61, 90, 74, 0.12);
        border: 1px solid rgba(125, 155, 118, 0.18);
    }

    .nav-bar.nav-open .nav-links {
        display: flex;
    }

    .nav-links li {
        width: 100%;
    }

    .nav-links a {
        width: 100%;
        justify-content: flex-start;
        padding: 0.8rem 0.95rem;
        border-radius: 14px;
        background: rgba(253, 248, 243, 0.88);
    }

    .nav-links a.active {
        background: rgba(125, 155, 118, 0.12);
    }
}

/* 主視覺區 */
.landing {
    max-width: 960px;
    margin: 0 auto;
    padding: 3rem 2rem;
}

.hero {
    text-align: center;
    padding: 4rem 0;
}

.hero h1 {
    font-family: "Outfit", sans-serif;
    font-weight: 600;
    font-size: clamp(2rem, 5vw, 3.25rem);
    color: var(--forest);
    line-height: 1.3;
    margin-bottom: 1rem;
}

.tagline {
    font-size: 1.1rem;
    color: var(--charcoal);
    opacity: 0.85;
    font-weight: 400;
}

/* 導覽群組與卡片 */
.nav-section-container {
    display: flex;
    flex-direction: column;
    gap: 3.5rem;
    margin: 3rem 0;
}

.nav-group-title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--forest);
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid rgba(125, 155, 118, 0.2);
}

.nav-tag {
    font-size: 0.8rem;
    font-weight: 700;
    font-family: "Outfit", sans-serif;
    text-transform: uppercase;
    padding: 0.2rem 0.6rem;
    border-radius: 6px;
    letter-spacing: 0.05em;
}

.tag-ai {
    background: rgba(125, 155, 118, 0.15);
    color: var(--sage);
    border: 1px solid rgba(125, 155, 118, 0.3);
}

.tag-life {
    background: rgba(201, 123, 92, 0.15);
    color: var(--terracotta);
    border: 1px solid rgba(201, 123, 92, 0.3);
}

.nav-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
}

.card {
    display: block;
    padding: 2rem;
    background: white;
    border-radius: 16px;
    box-shadow: var(--soft-shadow);
    text-decoration: none;
    color: inherit;
    transition: transform 0.2s, box-shadow 0.2s;
    border: 1px solid rgba(125, 155, 118, 0.15);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 32px rgba(61, 90, 74, 0.12);
}

.card-icon {
    display: block;
    font-size: 2rem;
    margin-bottom: 1rem;
}

.card h3 {
    font-size: 1.15rem;
    color: var(--forest);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.card p {
    font-size: 0.9rem;
    color: var(--charcoal);
    opacity: 0.8;
}

/* CTA 區 */
.cta {
    text-align: center;
    padding: 3rem;
    margin-top: 2rem;
    background: linear-gradient(135deg, rgba(125, 155, 118, 0.12), rgba(201, 123, 92, 0.08));
    border-radius: 20px;
}

.cta p {
    font-size: 1rem;
    color: var(--forest);
    font-weight: 500;
}