/**
 * Hestia Design System - CSS Styles
 * Following Apple Human Interface Guidelines (https://developer.apple.com/design/)
 * 
 * Design Principles:
 * - Clarity: Content is prioritized with clean typography
 * - Deference: UI supports content, doesn't compete with it
 * - Depth: Subtle shadows and layers create hierarchy
 * - Touch-friendly: All interactive elements ≥44×44px
 * - Feedback: Transitions and states provide clear feedback
 */

/* ===================================
   BASE STYLES
   =================================== */

* {
    -webkit-tap-highlight-color: transparent;
    -webkit-touch-callout: none;
}

html {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Smooth transitions for all interactive elements */
button, a, input, select, textarea {
    transition: all 0.2s ease-out;
}

/* iOS-style focus rings */
*:focus-visible {
    outline: none;
    box-shadow: 0 0 0 4px rgba(0, 122, 255, 0.25);
}

/* ===================================
   SCROLLBAR
   =================================== */

::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 3px;
}

/* ===================================
   BACKDROP & EFFECTS
   =================================== */

.backdrop-blur-ios {
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
}

/* ===================================
   BUTTONS
   =================================== */

.btn-press:active {
    transform: scale(0.97);
    opacity: 0.9;
}

.btn-primary-ios {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    min-width: 44px;
    padding: 0 20px;
    background: #007AFF;
    color: white;
    font-weight: 600;
    font-size: 17px;
    border-radius: 12px;
    border: none;
    cursor: pointer;
}

.btn-primary-ios:hover {
    background: #0056CC;
}

.btn-primary-ios:active {
    transform: scale(0.97);
}

.btn-secondary-ios {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    min-width: 44px;
    padding: 0 20px;
    background: #F2F2F7;
    color: #007AFF;
    font-weight: 600;
    font-size: 17px;
    border-radius: 12px;
    border: none;
    cursor: pointer;
}

.btn-secondary-ios:hover {
    background: #E5E5EA;
}

.btn-danger-ios {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    min-width: 44px;
    padding: 0 20px;
    background: #FF3B30;
    color: white;
    font-weight: 600;
    font-size: 17px;
    border-radius: 12px;
    border: none;
    cursor: pointer;
}

.btn-danger-ios:hover {
    background: #D62D23;
}

/* ===================================
   INPUTS
   =================================== */

.input-ios {
    height: 44px;
    padding: 0 16px;
    background: white;
    border: 1px solid #E5E5EA;
    border-radius: 12px;
    font-size: 17px;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.input-ios:focus {
    border-color: #007AFF;
    box-shadow: 0 0 0 4px rgba(0, 122, 255, 0.12);
}

.input-ios::placeholder {
    color: #AEAEB2;
}

/* ===================================
   CARDS & CONTAINERS
   =================================== */

.card-ios {
    background: white;
    border-radius: 16px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.06);
}

/* ===================================
   LIST ITEMS (iOS Settings style)
   =================================== */

.list-item-ios {
    display: flex;
    align-items: center;
    min-height: 44px;
    padding: 12px 16px;
    background: white;
    border-bottom: 0.5px solid #E5E5EA;
}

.list-item-ios:last-child {
    border-bottom: none;
}

/* ===================================
   TOAST NOTIFICATIONS
   =================================== */

.toast-ios {
    position: fixed;
    top: env(safe-area-inset-top, 20px);
    left: 50%;
    transform: translateX(-50%);
    padding: 12px 20px;
    border-radius: 100px;
    font-weight: 500;
    font-size: 15px;
    z-index: 9999;
    animation: toast-in 0.3s ease-out;
}

@keyframes toast-in {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

/* ===================================
   AVATARS
   =================================== */

.avatar-ios {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, #007AFF 0%, #5856D6 100%);
    color: white;
    font-weight: 600;
    font-size: 16px;
}

/* ===================================
   BADGES
   =================================== */

.badge-ios {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: 100px;
    font-size: 13px;
    font-weight: 600;
}

/* ===================================
   SEGMENTED CONTROL
   =================================== */

.segmented-control {
    display: inline-flex;
    background: #F2F2F7;
    border-radius: 8px;
    padding: 2px;
}

.segmented-control button,
.segmented-control a {
    padding: 6px 16px;
    border-radius: 6px;
    font-weight: 500;
    font-size: 14px;
    color: #636366;
    background: transparent;
}

.segmented-control button.active,
.segmented-control a.active {
    background: white;
    color: #1C1C1E;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}