/* Apple Style UI - Base Styles */

/* ============================================
   Typography & Base
   ============================================ */
* {
    box-sizing: border-box;
}

:root {
    /* Apple Color Palette */
    --apple-bg: #f5f5f7;
    --apple-card: #ffffff;
    --apple-accent: #007AFF;
    --apple-text: #1d1d1f;
    --apple-text-secondary: #86868b;
    --apple-border: rgba(0, 0, 0, 0.1);
    --apple-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    --apple-shadow-hover: 0 4px 16px rgba(0, 0, 0, 0.12);
    --apple-transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Border Radius */
    --apple-radius-card: 12px;
    --apple-radius-button: 8px;
    --apple-radius-input: 8px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", Helvetica, Arial, sans-serif;
    background-color: var(--apple-bg);
    color: var(--apple-text);
    line-height: 1.6;
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   Navigation - Glassmorphism
   ============================================ */
.apple-navbar {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--apple-border);
    padding: 12px 24px;
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--apple-transition);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.apple-navbar .navbar-brand {
    font-size: 20px;
    font-weight: 600;
    color: var(--apple-text);
    text-decoration: none;
    transition: var(--apple-transition);
}

.apple-navbar .navbar-brand:hover {
    color: var(--apple-accent);
}

.apple-navbar .nav-link {
    color: var(--apple-text);
    font-weight: 500;
    padding: 8px 16px;
    border-radius: var(--apple-radius-button);
    transition: var(--apple-transition);
    position: relative;
}

.apple-navbar .nav-link:hover {
    background-color: rgba(0, 122, 255, 0.1);
    color: var(--apple-accent);
}

.apple-navbar .nav-link.active {
    color: var(--apple-accent);
    background-color: rgba(0, 122, 255, 0.1);
}

/* Dropdown Menu */
.apple-dropdown {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid var(--apple-border);
    border-radius: var(--apple-radius-card);
    box-shadow: var(--apple-shadow-hover);
    padding: 8px 0;
    margin-top: 8px;
    opacity: 0;
    transform: translateY(-10px);
    transition: var(--apple-transition);
    pointer-events: none;
}

.apple-dropdown.show {
    opacity: 1;
    transform: translateY(0);
    pointer-events: all;
}

.apple-dropdown .dropdown-item {
    padding: 10px 20px;
    color: var(--apple-text);
    transition: var(--apple-transition);
    border-radius: 0;
}

.apple-dropdown .dropdown-item:hover {
    background-color: rgba(0, 122, 255, 0.1);
    color: var(--apple-accent);
}

/* Mobile Menu Toggle */
.apple-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: var(--apple-text);
    cursor: pointer;
    padding: 8px;
    border-radius: var(--apple-radius-button);
    transition: var(--apple-transition);
}

.apple-menu-toggle:hover {
    background-color: rgba(0, 122, 255, 0.1);
    color: var(--apple-accent);
}

.apple-nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
}

.apple-nav-links.mobile-open {
    display: flex;
}

/* ============================================
   Cards
   ============================================ */
.apple-card {
    background: var(--apple-card);
    border-radius: var(--apple-radius-card);
    box-shadow: var(--apple-shadow);
    padding: 24px;
    transition: var(--apple-transition);
    border: 1px solid var(--apple-border);
    will-change: transform, box-shadow;
}

.apple-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--apple-shadow-hover);
}

.apple-card-header {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--apple-text);
}

.apple-card-body {
    color: var(--apple-text-secondary);
}

/* Top navbar */
.apple-navbar {
    background: var(--apple-card);
    border-bottom: 1px solid var(--apple-border);
}

.apple-navbar .navbar-brand,
.apple-navbar .nav-link {
    color: var(--apple-text);
}

.apple-navbar .nav-link:hover,
.apple-navbar .nav-item.active > .nav-link {
    color: var(--apple-accent);
}

.navbar-subbrand {
    font-size: 14px;
    color: var(--apple-text-secondary);
    margin-left: 4px;
}

.navbar-subbrand:hover {
    color: var(--apple-accent);
    text-decoration: none;
}

/* Breadcrumbs */
.apple-breadcrumb .breadcrumb {
    background: transparent;
    padding: 0;
    margin-bottom: 0;
}

.apple-breadcrumb .breadcrumb-item + .breadcrumb-item::before {
    color: var(--apple-text-secondary);
}

.apple-breadcrumb .breadcrumb-item a {
    color: var(--apple-accent);
    text-decoration: none;
}

.apple-breadcrumb .breadcrumb-item a:hover {
    text-decoration: underline;
}

.apple-breadcrumb .breadcrumb-item.active {
    color: var(--apple-text-secondary);
}

/* Tool Cards */
.apple-tool-card {
    background: var(--apple-card);
    border-radius: var(--apple-radius-card);
    box-shadow: var(--apple-shadow);
    padding: 24px;
    transition: var(--apple-transition);
    border: 1px solid var(--apple-border);
    cursor: pointer;
    text-decoration: none;
    display: block;
    color: inherit;
    will-change: transform, box-shadow;
    position: relative;
}

.apple-tool-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--apple-shadow-hover);
    text-decoration: none;
    color: inherit;
}

.apple-tool-card .tool-icon {
    font-size: 32px;
    margin-bottom: 12px;
    color: var(--apple-accent);
}

.apple-tool-card .tool-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--apple-text);
}

.apple-tool-card .tool-description {
    font-size: 14px;
    color: var(--apple-text-secondary);
    line-height: 1.5;
}

/* New tool badge */
.apple-tool-card .tool-badge-new {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #ffcc00;
    box-shadow: 0 0 0 4px rgba(255, 204, 0, 0.25);
}

/* Footer */
.apple-footer {
    background: var(--apple-card);
    border-top: 1px solid var(--apple-border);
    margin-top: 80px;
    padding: 16px 0;
}

.apple-footer span,
.apple-footer a {
    font-size: 14px;
    color: var(--apple-text-secondary);
}

.apple-footer a {
    text-decoration: none;
}

.apple-footer a:hover {
    color: var(--apple-accent);
    text-decoration: none;
}

/* ============================================
   Buttons
   ============================================ */
.apple-btn {
    padding: 10px 20px;
    border-radius: var(--apple-radius-button);
    font-weight: 500;
    font-size: 15px;
    border: none;
    cursor: pointer;
    transition: var(--apple-transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    will-change: transform, background-color;
}

.apple-btn-primary {
    background: var(--apple-accent);
    color: white;
}

.apple-btn-primary:hover {
    background: #0051D5;
    transform: scale(1.02);
    color: white;
    text-decoration: none;
}

.apple-btn-primary:active {
    transform: scale(0.98);
}

.apple-btn-secondary {
    background: rgba(0, 122, 255, 0.1);
    color: var(--apple-accent);
}

.apple-btn-secondary:hover {
    background: rgba(0, 122, 255, 0.2);
    color: var(--apple-accent);
    text-decoration: none;
}

.apple-btn-outline {
    background: transparent;
    border: 1px solid var(--apple-border);
    color: var(--apple-text);
}

.apple-btn-outline:hover {
    background: rgba(0, 0, 0, 0.05);
    border-color: var(--apple-accent);
    color: var(--apple-accent);
    text-decoration: none;
}

/* ============================================
   Forms & Inputs
   ============================================ */
.apple-form-group {
    margin-bottom: 20px;
    position: relative;
}

.apple-input {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--apple-border);
    border-radius: var(--apple-radius-input);
    font-size: 15px;
    font-family: inherit;
    background: var(--apple-card);
    color: var(--apple-text);
    transition: var(--apple-transition);
    outline: none;
}

.apple-input:focus {
    border-color: var(--apple-accent);
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.1);
}

.apple-input::placeholder {
    color: var(--apple-text-secondary);
}

.apple-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    font-size: 14px;
    color: var(--apple-text);
}

/* Floating Labels */
.apple-input-floating {
    position: relative;
}

.apple-input-floating input {
    padding-top: 20px;
    padding-bottom: 8px;
}

.apple-input-floating label {
    position: absolute;
    left: 16px;
    top: 12px;
    color: var(--apple-text-secondary);
    font-size: 15px;
    pointer-events: none;
    transition: var(--apple-transition);
}

.apple-input-floating input:focus + label,
.apple-input-floating input:not(:placeholder-shown) + label {
    top: 4px;
    font-size: 12px;
    color: var(--apple-accent);
}

/* ============================================
   Layout
   ============================================ */
.apple-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px;
}

.apple-section {
    margin-bottom: 48px;
}

.apple-section-title {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--apple-text);
}

.apple-section-subtitle {
    font-size: 18px;
    color: var(--apple-text-secondary);
    margin-bottom: 32px;
}

.apple-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
}

/* ============================================
   Utilities
   ============================================ */
.apple-text-center {
    text-align: center;
}

.apple-mt-1 { margin-top: 8px; }
.apple-mt-2 { margin-top: 16px; }
.apple-mt-3 { margin-top: 24px; }
.apple-mt-4 { margin-top: 32px; }

.apple-mb-1 { margin-bottom: 8px; }
.apple-mb-2 { margin-bottom: 16px; }
.apple-mb-3 { margin-bottom: 24px; }
.apple-mb-4 { margin-bottom: 32px; }

.apple-divider {
    height: 1px;
    background: var(--apple-border);
    margin: 24px 0;
    border: none;
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 768px) {
    .apple-container {
        padding: 16px;
    }
    
    .apple-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .apple-card {
        padding: 20px;
    }
    
    .apple-section-title {
        font-size: 24px;
    }
    
    .apple-navbar {
        padding: 10px 16px;
    }
    
    .apple-tool-card {
        padding: 20px;
    }
    
    .apple-menu-toggle {
        display: block;
    }
    
    .apple-nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px) saturate(180%);
        -webkit-backdrop-filter: blur(20px) saturate(180%);
        border-bottom: 1px solid var(--apple-border);
        flex-direction: column;
        align-items: stretch;
        padding: 16px;
        box-shadow: var(--apple-shadow);
        gap: 8px;
    }
    
    .apple-nav-links.mobile-open {
        display: flex;
    }
    
    .apple-nav-links .nav-link {
        width: 100%;
        padding: 12px 16px;
    }
    
    .apple-navbar .d-flex {
        position: relative;
    }
}

@media (max-width: 480px) {
    .apple-container {
        padding: 12px;
    }
    
    .apple-card {
        padding: 16px;
    }
    
    .apple-btn {
        width: 100%;
        padding: 12px 20px;
    }
}

/* ============================================
   Animations
   ============================================ */
@keyframes apple-fade-in {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.apple-fade-in {
    animation: apple-fade-in 0.5s ease-out;
}

/* Loading States */
.apple-loading {
    opacity: 0.6;
    pointer-events: none;
}

/* Success/Error Messages */
.apple-alert {
    padding: 12px 16px;
    border-radius: var(--apple-radius-button);
    margin-bottom: 16px;
    font-size: 14px;
}

.apple-alert-success {
    background: rgba(52, 199, 89, 0.1);
    color: #34c759;
    border: 1px solid rgba(52, 199, 89, 0.3);
}

.apple-alert-error {
    background: rgba(255, 59, 48, 0.1);
    color: #ff3b30;
    border: 1px solid rgba(255, 59, 48, 0.3);
}