@import url('https://fonts.googleapis.com/css2?family=Fahkwang:wght@600&family=Roboto+Condensed:wght@400;700&display=swap');

/* ===== CSS RESET & BASE STYLES ===== */
*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    padding: 0;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== CSS CUSTOM PROPERTIES ===== */
:root {
    /* Color Palette */
    --color-primary-dark: #192626;
    --color-primary-medium: #0F2B46; /* Deep blue */
    --color-primary-light: #C1A26A;  /* Gold accent */
    --color-primary-accent: #256D85; /* Teal accent */
    --color-primary-lighter: #18415F; /* Lightened deep blue */

    /* Text Colors */
    --color-text-primary: #192626;
    --color-text-secondary: #0d2340;
    --color-text-muted: #949694;
    --color-text-on-dark: #ffffff;
    --color-text-on-light: var(--color-text-primary);
    --color-text-heading-dark: #192626;
    --color-text-heading-medium: #0d2340;

    /* Background Colors */
    --color-bg-main: #f8fafc;
    --color-bg-secondary: #eef2f6;
    --color-bg-header-sidebar: var(--color-primary-dark);
    --color-bg-light-gray: #b2a491;
    --color-bg-lighter-gray: #c0b096;
    --color-bg-card: #ffffff;
    --color-bg-overlay: rgba(25, 38, 38, 0.5);

    /* Border Colors */
    --color-border-default: #d5dbe3;
    --color-border-light: #e7edf4;
    --color-border-medium: #c0cad6;
    --color-border-dark: #949694;

    /* State Colors */
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    --color-info: var(--color-primary-accent);

    /* Shadow Colors */
    --color-shadow-light: rgba(25, 38, 38, 0.05);
    --color-shadow-medium: rgba(25, 38, 38, 0.1);
    --color-shadow-dark: rgba(25, 38, 38, 0.15);
    --color-shadow-focus: rgba(168, 184, 189, 0.25);

    /* Typography */
    --font-family-primary: 'Fahkwang', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-family-secondary: 'Roboto Condensed', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-family-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
    
    --font-weight-light: 300;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    --font-size-xs: 0.75rem;    /* 12px */
    --font-size-sm: 0.875rem;   /* 14px */
    --font-size-base: 1rem;     /* 16px */
    --font-size-lg: 1.125rem;   /* 18px */
    --font-size-xl: 1.25rem;    /* 20px */
    --font-size-2xl: 1.5rem;    /* 24px */
    --font-size-3xl: 1.875rem;  /* 30px */

    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;

    /* Border Radius */
    --border-radius-none: 0;
    --border-radius-xs: 0.125rem;   /* 2px */
    --border-radius-sm: 0.25rem;    /* 4px */
    --border-radius-md: 0.375rem;   /* 6px */
    --border-radius-lg: 0.5rem;     /* 8px */
    --border-radius-xl: 0.75rem;    /* 12px */
    --border-radius-2xl: 1rem;      /* 16px */
    --border-radius-full: 9999px;

    /* Spacing Scale */
    --spacing-0: 0;
    --spacing-1: 0.25rem;   /* 4px */
    --spacing-2: 0.5rem;    /* 8px */
    --spacing-3: 0.75rem;   /* 12px */
    --spacing-4: 1rem;      /* 16px */
    --spacing-5: 1.25rem;   /* 20px */
    --spacing-6: 1.5rem;    /* 24px */
    --spacing-8: 2rem;      /* 32px */
    --spacing-10: 2.5rem;   /* 40px */
    --spacing-12: 3rem;     /* 48px */
    --spacing-16: 4rem;     /* 64px */

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;

    /* Z-Index Scale */
    --z-index-dropdown: 1000;
    --z-index-sticky: 1020;
    --z-index-fixed: 1030;
    --z-index-modal-backdrop: 1040;
    --z-index-modal: 1050;
    --z-index-popover: 1060;
    --z-index-tooltip: 1070;

    /* Component Specific Variables */
    --metric-font-size-value: var(--font-size-2xl);
    --metric-font-size-delta: var(--font-size-base);
    --metric-color-value: var(--color-primary-medium);

    /* Breakpoints */
    --breakpoint-sm: 640px;
    --breakpoint-md: 768px;
    --breakpoint-lg: 1024px;
    --breakpoint-xl: 1280px;
    --breakpoint-2xl: 1536px;
}

/* ===== REDUCED MOTION SUPPORT ===== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* ===== BASE TYPOGRAPHY ===== */
body {
    font-family: var(--font-family-secondary);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--color-text-on-light);
    background-color: var(--color-bg-main);
}

/* Section titles */
.section-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.section-title + .card-container { margin-top: var(--spacing-3); }

/* Form tweaks */
label.form-label { font-size: 0.925rem; color: var(--color-text-secondary); }
.card-container .row.g-3 { row-gap: 0.75rem; }

/* Buttons with htmx loading state */
/* removed spinner styles */

/* Progress bar rounding */
.progress { background-color: var(--color-border-light); border-radius: var(--border-radius-full); overflow: hidden; }
.progress-bar { border-radius: var(--border-radius-full); }

/* Stepper specific colors */
.stepper .nav-link { color: var(--color-primary-medium); }
.stepper .nav-link.active, .stepper .show > .nav-link { background-color: var(--color-primary-medium); color: var(--color-text-on-dark); }

h1, h2, h3, h4, h5, h6 {
    margin: 0 0 var(--spacing-4) 0;
    font-family: var(--font-family-primary);
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-tight);
}

h1 {
    font-size: var(--font-size-3xl);
    color: var(--color-text-heading-dark);
    font-weight: var(--font-weight-semibold);
}

h2 {
    font-size: var(--font-size-2xl);
    color: var(--color-text-heading-medium);
    font-family: var(--font-family-secondary);
    font-weight: var(--font-weight-bold);
}

h3 {
    font-size: var(--font-size-xl);
    color: var(--color-text-heading-medium);
    font-family: var(--font-family-secondary);
    font-weight: var(--font-weight-bold);
}

p {
    margin: 0 0 var(--spacing-4) 0;
    font-family: var(--font-family-secondary);
    color: var(--color-text-primary);
}

.text-secondary {
    color: var(--color-text-muted);
    font-family: var(--font-family-secondary);
}

/* ===== FOCUS MANAGEMENT ===== */
:focus {
    outline: 2px solid var(--color-primary-light);
    outline-offset: 2px;
}

:focus:not(:focus-visible) {
    outline: none;
}

/* ===== BUTTON COMPONENTS ===== */
.btn-primary {
    background-color: var(--color-primary-lighter) !important;
    color: var(--color-text-on-dark) !important;
    border-radius: var(--border-radius-md);
    border: 1px solid var(--color-primary-lighter);
    padding: var(--spacing-2) var(--spacing-4);
    font-weight: var(--font-weight-medium);
    font-family: var(--font-family-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.btn-primary:hover {
    background-color: var(--color-primary-medium) !important;
    border-color: var(--color-primary-medium) !important;
    color: var(--color-text-on-dark) !important;
    transform: translateY(-1px);
    box-shadow: 0 4px 8px var(--color-shadow-medium);
}

.btn-primary:active {
    background-color: var(--color-primary-accent) !important;
    border-color: var(--color-primary-accent) !important;
    color: var(--color-text-on-dark) !important;
    transform: translateY(0);
    box-shadow: 0 2px 4px var(--color-shadow-medium);
}

.btn-primary:disabled {
    background-color: var(--color-primary-lighter) !important;
    border-color: var(--color-primary-lighter) !important;
    color: var(--color-text-on-dark) !important;
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* Outline secondary tuned to palette */
.btn-outline-secondary {
    color: var(--color-primary-medium);
    border-color: var(--color-primary-medium);
}
.btn-outline-secondary:hover {
    color: var(--color-text-on-dark);
    background-color: var(--color-primary-medium);
    border-color: var(--color-primary-medium);
}

/* Alerts harmonized */
.alert-success { background-color: rgba(16, 185, 129, 0.12); color: #0f5132; border: 1px solid rgba(16, 185, 129, 0.3); }
.alert-warning { background-color: rgba(245, 158, 11, 0.12); color: #664d03; border: 1px solid rgba(245, 158, 11, 0.3); }
.alert-danger { background-color: rgba(239, 68, 68, 0.12); color: #842029; border: 1px solid rgba(239, 68, 68, 0.3); }
.alert-info { background-color: rgba(37, 109, 133, 0.12); color: #0c5460; border: 1px solid rgba(37, 109, 133, 0.3); }

/* ===== UTILITY CLASSES ===== */
.card-container {
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border-light);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-6);
    box-shadow: 0 2px 8px var(--color-shadow-light);
    transition: all var(--transition-normal);
}

.card-container:hover {
    box-shadow: 0 4px 12px var(--color-shadow-medium);
    transform: translateY(-1px);
}

/* Loading States */
.loading {
    position: relative;
    overflow: hidden;
}

.loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.4),
        transparent
    );
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% { left: -100%; }
    100% { left: 100%; }
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
    :root {
        --spacing-4: 0.75rem;
        --spacing-6: 1rem;
    }
    
    div[data-testid="stMetric"] {
        padding: var(--spacing-3);
    }
    
    .card-container {
        padding: var(--spacing-4);
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: var(--font-size-2xl);
    }
    
    h2 {
        font-size: var(--font-size-xl);
    }
    
    .stTabs [data-baseweb="tab"] {
        padding: var(--spacing-2) var(--spacing-3);
        font-size: var(--font-size-sm);
    }
}

/* ===== PRINT STYLES ===== */
@media print {
    .stButton,
    [data-testid="stSlider"] {
        display: none !important;
    }
    
    body {
        background: white !important;
        color: black !important;
    }
    
    .card-container {
        box-shadow: none !important;
        border: 1px solid #ccc !important;
    }
}

/* ===== CUSTOM HEADER ===== */
.custom-header {
    background-color: var(--color-primary-medium);
    padding: var(--spacing-3) var(--spacing-6);
    border-radius: var(--border-radius-lg);
    margin-bottom: var(--spacing-6);
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 16px var(--color-shadow-medium);
}

.custom-header img {
    height: 55px; 
    width: auto;
    filter: brightness(0) invert(1);
}

.custom-header h1 {
    color: var(--color-text-on-dark);
    font-size: var(--font-size-2xl);
    margin: 0;
    font-weight: var(--font-weight-regular);
}

@media (max-width: 768px) {
    .custom-header {
        flex-direction: row;
        justify-content: center;
        align-items: center;
        text-align: center;
        padding: var(--spacing-3);
        gap: var(--spacing-4);
    }

    .custom-header img {
        margin-bottom: -5px;
        height: 40px;
    }

    .custom-header h1 {
        font-size: var(--font-size-lg);
    }
}