/* ============================================
   BKingStudio - TRUE MOBILE-FIRST ARCHITECTURE
   Native Mobile Experience (320px+) → Desktop Enhancement
   Django/Python Compatible - No Breaking Changes
   
   ARCHITECTURE:
   - Base styles (no media query) = Mobile (320px+)
   - @media (min-width: 768px) = Tablet enhancements
   - @media (min-width: 1024px) = Desktop enhancements
   - @media (min-width: 1440px) = Large desktop polish
   
   This file loads BEFORE Bootstrap to override desktop-first patterns
   ============================================ */

/* ===== ROOT VARIABLES - Mobile-First Base ===== */
:root {
    /* Mobile-first breakpoints */
    --mobile-base: 320px;
    --mobile-large: 480px;
    --tablet: 768px;
    --desktop: 1024px;
    --desktop-large: 1440px;
    --desktop-xl: 1920px;
    
    /* Mobile nav */
    --mobile-nav-height: 60px;
    --mobile-nav-submenu-offset: 70px;
    
    /* Mobile-first spacing (small base, scales up) */
    --spacing-xs: 0.25rem;      /* 4px mobile */
    --spacing-sm: 0.5rem;       /* 8px mobile */
    --spacing-md: 0.75rem;      /* 12px mobile */
    --spacing-lg: 1rem;         /* 16px mobile */
    --spacing-xl: 1.5rem;      /* 24px mobile */
    
    /* Mobile-first border radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* Mobile-first typography scale */
    --font-xs: 0.75rem;    /* 12px mobile */
    --font-sm: 0.875rem;   /* 14px mobile */
    --font-base: 1rem;     /* 16px mobile */
    --font-lg: 1.125rem;   /* 18px mobile */
    --font-xl: 1.25rem;    /* 20px mobile */
    --font-2xl: 1.5rem;    /* 24px mobile */
    --font-3xl: 1.875rem;  /* 30px mobile */
}

/* ===== MOBILE BASE (320px+) - NO MEDIA QUERY ===== */
/* These styles apply to ALL screen sizes by default */
/* Mobile-first means: start here, then enhance for larger screens */

/* Base Reset - Mobile-First */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px; /* Mobile base: 16px = 1rem */
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: var(--font-base); /* 16px mobile */
    line-height: 1.5;
    color: #212529;
    background: #ffffff;
    width: 100%;
    max-width: 100%;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== MOBILE-FIRST TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
    color: #001f3f;
}

h1 { font-size: var(--font-2xl); }      /* 24px mobile */
h2 { font-size: var(--font-xl); }       /* 20px mobile */
h3 { font-size: var(--font-lg); }       /* 18px mobile */
h4 { font-size: var(--font-base); }      /* 16px mobile */
h5 { font-size: var(--font-sm); }        /* 14px mobile */
h6 { font-size: var(--font-xs); }        /* 12px mobile */

p {
    font-size: var(--font-base); /* 16px mobile */
    line-height: 1.5;
    margin-bottom: var(--spacing-sm);
    color: #495057;
}

/* ===== MOBILE-FIRST CONTAINERS ===== */
.container,
.container-fluid {
    width: 100%;
    max-width: 100%;
    padding-left: var(--spacing-md);  /* 12px mobile */
    padding-right: var(--spacing-md);
    margin-left: auto;
    margin-right: auto;
    box-sizing: border-box;
}

/* ===== MOBILE-FIRST CARDS ===== */
.card {
    width: 100%;
    max-width: 100%;
    background: #ffffff;
    border: 1px solid rgba(0,31,63,0.08);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md); /* 12px mobile */
    margin-bottom: var(--spacing-md);
    box-shadow: 0 2px 4px rgba(0,0,0,0.04);
    box-sizing: border-box;
}

.card-header {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-base);
    font-weight: 600;
    border-bottom: 1px solid rgba(0,31,63,0.08);
    margin: calc(var(--spacing-md) * -1) calc(var(--spacing-md) * -1) var(--spacing-sm) calc(var(--spacing-md) * -1);
}

.card-body {
    padding: var(--spacing-md);
    font-size: var(--font-base);
    line-height: 1.5;
}

.card-footer {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-sm);
    border-top: 1px solid rgba(0,31,63,0.08);
    margin: var(--spacing-sm) calc(var(--spacing-md) * -1) calc(var(--spacing-md) * -1) calc(var(--spacing-md) * -1);
}

/* ===== MOBILE-FIRST BUTTONS ===== */
.btn,
button {
    min-height: 44px; /* Mobile touch target */
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-base);
    font-weight: 600;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    transition: all 0.2s ease;
    box-sizing: border-box;
    width: 100%; /* Full width on mobile */
    max-width: 100%;
}

.btn-sm {
    min-height: 36px;
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-sm);
}

.btn-lg {
    min-height: 48px;
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-lg);
}

/* ===== MOBILE-FIRST FORMS ===== */
.form-control,
.form-select,
input:not([type="checkbox"]):not([type="radio"]),
textarea,
select {
    width: 100%;
    max-width: 100%;
    min-height: 44px; /* Mobile touch target */
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-base);
    border: 1px solid rgba(0,31,63,0.15);
    border-radius: var(--radius-md);
    box-sizing: border-box;
    margin-bottom: var(--spacing-sm);
}

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

/* ===== MOBILE-FIRST IMAGES ===== */
img {
    max-width: 100%;
    height: auto;
    display: block;
    box-sizing: border-box;
}

/* Avatars - Mobile size */
.avatar,
img[class*="avatar"] {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
}

/* Card images - Mobile size */
.card img:not(.avatar):not([class*="avatar"]) {
    width: 100%;
    height: auto;
    max-height: 200px;
    object-fit: cover;
    border-radius: var(--radius-md);
}

/* ===== MOBILE-FIRST NAVIGATION ===== */
.mobile-bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    width: 100%;
    height: var(--mobile-nav-height);
    background: #ffffff;
    border-top: 2px solid rgba(0,31,63,0.1);
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
    z-index: 1000;
    display: flex;
    justify-content: space-around;
    align-items: center;
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}

.mobile-bottom-nav .nav-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xs);
    color: #001f3f;
    text-decoration: none;
    font-size: var(--font-xs);
    min-height: 44px;
    min-width: 44px;
    box-sizing: border-box;
}

.mobile-bottom-nav .nav-link i {
    font-size: var(--font-lg);
    margin-bottom: 2px;
}

/* ===== MOBILE-FIRST MODALS ===== */
.modal-dialog {
    margin: var(--spacing-md);
    max-width: calc(100% - var(--spacing-lg));
    width: 100%;
}

.modal-content {
    border-radius: var(--radius-lg);
    box-shadow: 0 8px 32px rgba(0,0,0,0.2);
}

.modal-header,
.modal-body,
.modal-footer {
    padding: var(--spacing-md);
}

/* ===== MOBILE-FIRST UTILITIES ===== */
.text-center { text-align: center !important; }
.text-left { text-align: left !important; }
.text-right { text-align: right !important; }

.d-flex { display: flex !important; }
.d-block { display: block !important; }
.d-none { display: none !important; }

.align-items-center { align-items: center !important; }
.justify-content-center { justify-content: center !important; }
.justify-content-between { justify-content: space-between !important; }

.w-100 { width: 100% !important; }
.h-100 { height: 100% !important; }

.mb-1 { margin-bottom: var(--spacing-xs) !important; }
.mb-2 { margin-bottom: var(--spacing-sm) !important; }
.mb-3 { margin-bottom: var(--spacing-md) !important; }
.mb-4 { margin-bottom: var(--spacing-lg) !important; }
.mb-5 { margin-bottom: var(--spacing-xl) !important; }

.mt-1 { margin-top: var(--spacing-xs) !important; }
.mt-2 { margin-top: var(--spacing-sm) !important; }
.mt-3 { margin-top: var(--spacing-md) !important; }
.mt-4 { margin-top: var(--spacing-lg) !important; }
.mt-5 { margin-top: var(--spacing-xl) !important; }

.p-1 { padding: var(--spacing-xs) !important; }
.p-2 { padding: var(--spacing-sm) !important; }
.p-3 { padding: var(--spacing-md) !important; }
.p-4 { padding: var(--spacing-lg) !important; }
.p-5 { padding: var(--spacing-xl) !important; }

/* ===== PROGRESSIVE ENHANCEMENT - TABLET (768px+) ===== */
@media (min-width: 768px) {
    :root {
        --spacing-xs: 0.375rem;   /* 6px tablet */
        --spacing-sm: 0.75rem;     /* 12px tablet */
        --spacing-md: 1rem;       /* 16px tablet */
        --spacing-lg: 1.5rem;     /* 24px tablet */
        --spacing-xl: 2rem;       /* 32px tablet */
        
        --radius-sm: 6px;
        --radius-md: 10px;
        --radius-lg: 14px;
        --radius-xl: 18px;
    }
    
    html {
        font-size: 17px; /* Slightly larger base */
    }
    
    h1 { font-size: 2rem; }      /* 34px tablet */
    h2 { font-size: 1.75rem; }    /* 30px tablet */
    h3 { font-size: 1.5rem; }     /* 26px tablet */
    h4 { font-size: 1.25rem; }    /* 21px tablet */
    h5 { font-size: 1.125rem; }   /* 19px tablet */
    h6 { font-size: 1rem; }       /* 17px tablet */
    
    .container {
        max-width: 720px;
        padding-left: var(--spacing-lg);
        padding-right: var(--spacing-lg);
    }
    
    .btn {
        width: auto; /* Buttons can be inline on tablet */
        min-width: 120px;
    }
    
    .avatar,
    img[class*="avatar"] {
        width: 48px;
        height: 48px;
    }
    
    .card {
        padding: var(--spacing-lg);
    }
    
    .card img:not(.avatar):not([class*="avatar"]) {
        max-height: 250px;
    }
}

/* ===== PROGRESSIVE ENHANCEMENT - DESKTOP (1024px+) ===== */
@media (min-width: 1024px) {
    :root {
        --spacing-xs: 0.5rem;    /* 8px desktop */
        --spacing-sm: 1rem;       /* 16px desktop */
        --spacing-md: 1.25rem;   /* 20px desktop */
        --spacing-lg: 2rem;      /* 32px desktop */
        --spacing-xl: 2.5rem;    /* 40px desktop */
        
        --radius-sm: 8px;
        --radius-md: 12px;
        --radius-lg: 16px;
        --radius-xl: 20px;
    }
    
    html {
        font-size: 18px; /* Larger base for desktop */
    }
    
    h1 { font-size: 2.5rem; }     /* 45px desktop */
    h2 { font-size: 2rem; }        /* 36px desktop */
    h3 { font-size: 1.75rem; }     /* 32px desktop */
    h4 { font-size: 1.5rem; }      /* 27px desktop */
    h5 { font-size: 1.25rem; }     /* 23px desktop */
    h6 { font-size: 1.125rem; }    /* 20px desktop */
    
    .container {
        max-width: 1200px;
        padding-left: var(--spacing-xl);
        padding-right: var(--spacing-xl);
    }
    
    .avatar,
    img[class*="avatar"] {
        width: 56px;
        height: 56px;
    }
    
    .card {
        padding: var(--spacing-xl);
    }
    
    .card img:not(.avatar):not([class*="avatar"]) {
        max-height: 300px;
    }
    
    .btn {
        min-width: 150px;
    }
}

/* ===== PROGRESSIVE ENHANCEMENT - LARGE DESKTOP (1440px+) ===== */
@media (min-width: 1440px) {
    .container {
        max-width: 1400px;
    }
    
    .avatar,
    img[class*="avatar"] {
        width: 64px;
        height: 64px;
    }
}

/* ===== PROGRESSIVE ENHANCEMENT - XL DESKTOP (1920px+) ===== */
@media (min-width: 1920px) {
    .container {
        max-width: 1600px;
    }
}

/* ===== BOOTSTRAP OVERRIDES - Mobile-First ===== */
/* Override Bootstrap's desktop-first patterns */
/* These ensure mobile-first styles take precedence */

/* Override Bootstrap's default container max-widths */
.container {
    width: 100% !important;
    max-width: 100% !important;
    padding-left: var(--spacing-md) !important;
    padding-right: var(--spacing-md) !important;
}

/* Override Bootstrap's button defaults for mobile */
.btn {
    width: 100% !important;
    max-width: 100% !important;
    min-height: 44px !important;
    font-size: var(--font-base) !important;
    padding: var(--spacing-sm) var(--spacing-lg) !important;
}

/* Override Bootstrap's card defaults for mobile */
.card {
    width: 100% !important;
    max-width: 100% !important;
    padding: var(--spacing-md) !important;
    margin-bottom: var(--spacing-md) !important;
}

/* Override Bootstrap's form defaults for mobile */
.form-control,
.form-select {
    width: 100% !important;
    max-width: 100% !important;
    min-height: 44px !important;
    font-size: var(--font-base) !important;
    padding: var(--spacing-sm) var(--spacing-md) !important;
}

/* Tablet+ - Allow Bootstrap's responsive features */
@media (min-width: 768px) {
    .btn {
        width: auto !important;
        min-width: 120px !important;
    }
    
    .container {
        max-width: 720px !important;
    }
}

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