/* ============================================================
   BERIZAL PORTAL — GLOBAL STYLES
   Base styles, CSS variables, reset, utilities
   ============================================================ */

/* ---------- CSS Custom Properties ---------- */
:root {
    /* Colors */
    --clr-primary:        #0c2d6b;
    --clr-primary-light:  #1a4ea0;
    --clr-primary-lighter:#2a67c8;
    --clr-primary-dark:   #071c45;
    --clr-primary-900:    #040f27;

    --clr-accent:         #f5890a;
    --clr-accent-light:   #ffb04a;
    --clr-accent-dark:    #d4700a;
    --clr-accent-pale:    #fff4e6;

    --clr-white:          #ffffff;
    --clr-light:          #f4f7fc;
    --clr-light-2:        #e8eef8;
    --clr-border:         #d0daea;
    --clr-gray:           #6b7280;
    --clr-gray-dark:      #374151;
    --clr-dark:           #111827;

    /* Semantic colors */
    --clr-success:        #10b981;
    --clr-warning:        #f59e0b;
    --clr-error:          #ef4444;

    /* Typography */
    --font-primary:   'Poppins', sans-serif;
    --font-secondary: 'Merriweather', serif;

    --fs-xs:   0.75rem;   /* 12px */
    --fs-sm:   0.875rem;  /* 14px */
    --fs-base: 1rem;      /* 16px */
    --fs-md:   1.125rem;  /* 18px */
    --fs-lg:   1.25rem;   /* 20px */
    --fs-xl:   1.5rem;    /* 24px */
    --fs-2xl:  1.875rem;  /* 30px */
    --fs-3xl:  2.25rem;   /* 36px */
    --fs-4xl:  3rem;      /* 48px */
    --fs-5xl:  3.75rem;   /* 60px */

    --fw-light:   300;
    --fw-regular: 400;
    --fw-medium:  500;
    --fw-semi:    600;
    --fw-bold:    700;
    --fw-black:   800;

    --lh-tight:  1.25;
    --lh-snug:   1.375;
    --lh-normal: 1.5;
    --lh-relaxed:1.625;

    /* Spacing */
    --sp-1:  0.25rem;
    --sp-2:  0.5rem;
    --sp-3:  0.75rem;
    --sp-4:  1rem;
    --sp-5:  1.25rem;
    --sp-6:  1.5rem;
    --sp-7:  1.75rem;
    --sp-8:  2rem;
    --sp-10: 2.5rem;
    --sp-12: 3rem;
    --sp-16: 4rem;
    --sp-20: 5rem;
    --sp-24: 6rem;

    /* Border radius */
    --r-sm:   4px;
    --r-md:   8px;
    --r-lg:   12px;
    --r-xl:   16px;
    --r-2xl:  24px;
    --r-full: 9999px;

    /* Shadows */
    --shadow-xs: 0 1px 2px rgba(0,0,0,0.06);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.10), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.10), 0 4px 6px rgba(0,0,0,0.05);
    --shadow-xl: 0 20px 30px rgba(0,0,0,0.12), 0 10px 10px rgba(0,0,0,0.06);
    --shadow-primary: 0 8px 24px rgba(12,45,107,0.30);
    --shadow-accent:  0 8px 24px rgba(245,137,10,0.35);

    /* Transitions */
    --ease:      cubic-bezier(0.4, 0, 0.2, 1);
    --ease-in:   cubic-bezier(0.4, 0, 1, 1);
    --ease-out:  cubic-bezier(0, 0, 0.2, 1);
    --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);

    --dur-fast:   150ms;
    --dur-base:   250ms;
    --dur-slow:   400ms;
    --dur-slower: 600ms;

    --transition: var(--dur-base) var(--ease);

    /* Layout */
    --container-max:  1280px;
    --container-pad:  clamp(1rem, 4vw, 2rem);
    --header-height:  72px;
    --topbar-height:  40px;

    /* Z-index scale */
    --z-base:    1;
    --z-dropdown: 100;
    --z-sticky:  200;
    --z-overlay: 400;
    --z-modal:   500;
    --z-toast:   600;
}

/* ---------- Reset ---------- */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--header-height) + var(--topbar-height));
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-primary);
    font-size: var(--fs-base);
    font-weight: var(--fw-regular);
    line-height: var(--lh-normal);
    color: var(--clr-dark);
    background-color: var(--clr-white);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img,
video {
    display: block;
    max-width: 100%;
}

a {
    color: inherit;
    text-decoration: none;
}

ul,
ol {
    list-style: none;
}

button,
input,
select,
textarea {
    font-family: inherit;
    font-size: inherit;
}

button {
    cursor: pointer;
    border: none;
    background: none;
}

address {
    font-style: normal;
}

/* ---------- Accessibility ---------- */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

:focus-visible {
    outline: 3px solid var(--clr-accent);
    outline-offset: 3px;
}

/* ---------- Container ---------- */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--container-pad);
}

/* ---------- Sections ---------- */
.section {
    padding-block: var(--sp-20);
}

.section--alt {
    background-color: var(--clr-light);
}

.section-header {
    text-align: center;
    margin-bottom: var(--sp-12);
}

.section-tag {
    display: inline-flex;
    align-items: center;
    gap: var(--sp-2);
    background: var(--clr-accent-pale);
    color: var(--clr-accent-dark);
    font-size: var(--fs-sm);
    font-weight: var(--fw-semi);
    padding: var(--sp-2) var(--sp-4);
    border-radius: var(--r-full);
    margin-bottom: var(--sp-4);
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.section-tag--light {
    background: rgba(255,255,255,0.2);
    color: var(--clr-white);
    border: 1px solid rgba(255,255,255,0.4);
}

.section-title {
    font-size: clamp(var(--fs-2xl), 3.5vw, var(--fs-4xl));
    font-weight: var(--fw-black);
    color: var(--clr-primary);
    line-height: var(--lh-tight);
    margin-bottom: var(--sp-4);
}

.section-desc {
    font-size: var(--fs-md);
    color: var(--clr-gray);
    max-width: 600px;
    margin-inline: auto;
    line-height: var(--lh-relaxed);
}

.section-footer-row {
    text-align: center;
    margin-top: var(--sp-12);
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--sp-2);
    padding: 0.75rem 1.75rem;
    border-radius: var(--r-full);
    font-size: var(--fs-sm);
    font-weight: var(--fw-semi);
    letter-spacing: 0.025em;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
    white-space: nowrap;
}

.btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255,255,255,0.15);
    opacity: 0;
    transition: opacity var(--transition);
}

.btn:hover::before {
    opacity: 1;
}

.btn-primary {
    background: var(--clr-primary);
    color: var(--clr-white);
    box-shadow: var(--shadow-primary);
}

.btn-primary:hover {
    background: var(--clr-primary-light);
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(12,45,107,0.35);
}

.btn-accent {
    background: var(--clr-accent);
    color: var(--clr-white);
    box-shadow: var(--shadow-accent);
}

.btn-accent:hover {
    background: var(--clr-accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(245,137,10,0.45);
}

.btn-outline-white {
    background: transparent;
    color: var(--clr-white);
    border: 2px solid rgba(255,255,255,0.75);
}

.btn-outline-white:hover {
    background: rgba(255,255,255,0.15);
    border-color: var(--clr-white);
    transform: translateY(-2px);
}

.btn-cta-outline {
    background: transparent;
    color: var(--clr-primary);
    border: 2px solid var(--clr-primary-light);
    padding: 0.65rem 1.5rem;
    border-radius: var(--r-full);
    display: inline-flex;
    align-items: center;
    gap: var(--sp-2);
    font-size: var(--fs-sm);
    font-weight: var(--fw-semi);
    transition: all var(--transition);
}

.btn-cta-outline:hover {
    background: var(--clr-primary);
    color: var(--clr-white);
    transform: translateY(-1px);
}

.btn-cta-white {
    background: var(--clr-white);
    color: var(--clr-primary);
    border: 2px solid var(--clr-white);
    padding: 0.65rem 1.5rem;
    border-radius: var(--r-full);
    display: inline-flex;
    align-items: center;
    gap: var(--sp-2);
    font-size: var(--fs-sm);
    font-weight: var(--fw-semi);
    transition: all var(--transition);
}

.btn-cta-white:hover {
    background: transparent;
    color: var(--clr-white);
    transform: translateY(-1px);
}

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: var(--clr-light);
}

::-webkit-scrollbar-thumb {
    background: var(--clr-primary-lighter);
    border-radius: var(--r-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--clr-primary);
}

/* ---------- Animations ---------- */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50%       { transform: scale(1.08); }
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50%       { transform: translateY(-10px); }
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

@keyframes shimmer {
    0%   { background-position: -200% 0; }
    100% { background-position:  200% 0; }
}

.animate-fade-in-up {
    animation: fadeInUp 0.6s var(--ease-out) both;
}

.animate-fade-in {
    animation: fadeIn 0.4s var(--ease-out) both;
}

/* ---------- High Contrast Mode ---------- */
body.high-contrast {
    filter: invert(1) hue-rotate(180deg);
}

body.high-contrast img,
body.high-contrast video,
body.high-contrast iframe {
    filter: invert(1) hue-rotate(180deg);
}

/* ---------- CTA Section ---------- */
.cta-section {
    padding-block: var(--sp-20);
    background: linear-gradient(135deg, var(--clr-primary-dark) 0%, var(--clr-primary) 100%);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -60%;
    right: -10%;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: rgba(255,255,255,0.04);
    pointer-events: none;
}

.cta-section::after {
    content: '';
    position: absolute;
    bottom: -40%;
    left: -5%;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: rgba(245,137,10,0.08);
    pointer-events: none;
}

.cta-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--sp-6);
    position: relative;
    z-index: 1;
}

.cta-card {
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: var(--r-xl);
    padding: var(--sp-10) var(--sp-8);
    text-align: center;
    color: var(--clr-white);
    transition: all var(--transition);
    backdrop-filter: blur(8px);
}

.cta-card:hover {
    background: rgba(255,255,255,0.10);
    transform: translateY(-4px);
    border-color: rgba(255,255,255,0.25);
    box-shadow: 0 16px 40px rgba(0,0,0,0.3);
}

.cta-card--featured {
    background: var(--clr-accent);
    border-color: var(--clr-accent);
    box-shadow: var(--shadow-accent);
}

.cta-card--featured:hover {
    background: var(--clr-accent-dark);
    border-color: var(--clr-accent-dark);
}

.cta-icon {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: rgba(255,255,255,0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--sp-5);
    font-size: 1.75rem;
    transition: all var(--dur-slow) var(--ease);
}

.cta-card:hover .cta-icon {
    transform: scale(1.1) rotate(5deg);
}

.cta-card h3 {
    font-size: var(--fs-lg);
    font-weight: var(--fw-bold);
    margin-bottom: var(--sp-3);
}

.cta-card p {
    font-size: var(--fs-sm);
    opacity: 0.85;
    line-height: var(--lh-relaxed);
    margin-bottom: var(--sp-6);
}

/* ---------- Back to Top ---------- */
.back-to-top {
    position: fixed;
    bottom: var(--sp-8);
    right: var(--sp-8);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--clr-accent);
    color: var(--clr-white);
    font-size: var(--fs-base);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-accent);
    z-index: var(--z-sticky);
    opacity: 0;
    visibility: hidden;
    transform: translateY(16px);
    transition: all var(--transition);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--clr-accent-dark);
    transform: translateY(-4px);
    box-shadow: 0 12px 28px rgba(245,137,10,0.50);
}