@import url('https://fonts.googleapis.com/css2?family=Cairo:wght@200;300;400;500;600;700;800;900&family=Poppins:wght@300;400;500;600;700&display=swap');

/* 
   ==========================================================================
   NILE VALLEY UNIVERSITY - PROFESSIONAL ENTERPRISE DESIGN (V6.0)
   Theme: Corporate Blue, Cloud White & Modern Minimalism
   Typography: Cairo (Primary), Poppins (Secondary/Numbers)
   ==========================================================================
*/

:root {
    /* Corporate Palette */
    --nvu-blue-dark: #002D5B;
    /* Deep Professional Blue */
    --nvu-blue-main: #0056B3;
    /* Vibrant Primary Blue */
    --nvu-blue-light: #E7F1FF;
    /* Selection/Soft BG */
    --nvu-accent: #FF9F0A;
    /* Warm Gold/Orange for Action */

    --white: #ffffff;
    --gray-50: #F8FAFC;
    --gray-100: #F1F5F9;
    --gray-200: #E2E8F0;
    --gray-700: #334155;
    --gray-900: #0F172A;

    /* Professional Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    --radius-md: 12px;
    --radius-lg: 24px;
    --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Global Reset --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Cairo', sans-serif;
    color: var(--gray-700);
    background-color: var(--white);
    direction: rtl;
    line-height: 1.7;
    overflow-x: hidden;
}

/* --- Typography --- */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 800;
    color: var(--gray-900);
    line-height: 1.3;
}

.text-blue {
    color: var(--nvu-blue-main) !important;
}

.text-accent {
    color: var(--nvu-accent) !important;
}

.bg-light {
    background-color: var(--gray-50) !important;
}

/* --- Layout Utilities --- */
.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

.section-py {
    padding: 100px 0;
}

@media (max-width: 768px) {
    .section-py {
        padding: 60px 0;
    }
}

/* --- Premium Buttons --- */
.btn-nvu {
    background-color: var(--nvu-blue-main);
    color: var(--white);
    padding: 14px 32px;
    border-radius: var(--radius-md);
    font-weight: 700;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: var(--transition-base);
    border: none;
    cursor: pointer;
}

.btn-nvu:hover {
    background-color: var(--nvu-blue-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 86, 179, 0.2);
}

.btn-accent {
    background-color: var(--nvu-accent);
    color: var(--white);
    padding: 14px 32px;
    border-radius: var(--radius-md);
    font-weight: 700;
    text-decoration: none;
    transition: var(--transition-base);
}

.btn-accent:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(255, 159, 10, 0.2);
}

/* --- Header System --- */
.nvu-navbar {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--gray-200);
}

.nav-link {
    color: var(--gray-900);
    font-weight: 600;
    text-decoration: none;
    margin: 0 15px;
    transition: var(--transition-base);
}

/* --- Portal Form Styling --- */
.form-control {
    padding: 12px 18px;
    border-radius: var(--radius-md);
    border: 2px solid var(--gray-200);
    transition: var(--transition-base);
    font-size: 0.95rem;
}

.form-control:focus {
    border-color: var(--nvu-blue-main);
    box-shadow: 0 0 0 4px rgba(0, 86, 179, 0.1);
}

.form-label-professional {
    font-weight: 700;
    color: var(--gray-700);
    font-size: 0.9rem;
    margin-bottom: 10px;
    display: block;
}

.portal-header {
    margin-bottom: 40px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--gray-100);
}

.table-enterprise {
    width: 100%;
    margin-bottom: 0;
    color: var(--gray-700);
}

.table-enterprise thead th {
    background: var(--gray-100);
    color: var(--nvu-blue-dark);
    font-weight: 800;
    padding: 15px;
    border: none;
}

.table-enterprise tbody td {
    padding: 15px;
    border-bottom: 1px solid var(--gray-100);
}

.badge-outline-blue {
    border: 1px solid var(--nvu-blue-main);
    color: var(--nvu-blue-main);
    padding: 5px 15px;
    border-radius: 50px;
    font-weight: 700;
    font-size: 11px;
}

/* --- Hero Creative --- */
.hero-enterprise {
    background: linear-gradient(145deg, var(--nvu-blue-dark) 0%, var(--nvu-blue-main) 100%);
    position: relative;
    color: var(--white);
    overflow: hidden;
    padding: 140px 0;
}

.hero-enterprise::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('https://www.transparenttextures.com/patterns/cubes.png');
    opacity: 0.05;
}

.hero-enterprise h1 {
    color: var(--white);
    font-size: clamp(2.8rem, 6vw, 4.5rem);
    text-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.hero-enterprise p {
    opacity: 0.85;
    font-size: 1.3rem;
    font-weight: 400;
    margin-bottom: 45px;
    max-width: 600px;
}

/* --- Cards & Features --- */
.nvu-card {
    background: var(--white);
    padding: 40px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    transition: var(--transition-base);
    height: 100%;
}

.nvu-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--nvu-blue-main);
}

.icon-box {
    width: 64px;
    height: 64px;
    background: var(--nvu-blue-light);
    color: var(--nvu-blue-main);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 16px;
    margin-bottom: 25px;
    font-size: 1.5rem;
}

/* --- Stats Grid --- */
.stat-item {
    text-align: center;
    padding: 30px;
}

.stat-number {
    font-family: 'Poppins', sans-serif;
    font-size: 3rem;
    font-weight: 800;
    color: var(--nvu-blue-main);
    display: block;
}

.stat-label {
    font-weight: 700;
    color: var(--gray-700);
}

/* --- Footer System --- */
.footer-modern {
    background-color: var(--nvu-blue-dark);
    color: var(--white);
    padding: 80px 0 30px;
    position: relative;
}

.footer-link {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition-base);
    display: inline-block;
}

.footer-link:hover {
    color: var(--nvu-accent);
    transform: translateX(-5px);
}

.btn-cta {
    background-color: var(--nvu-accent);
    color: white;
    border: none;
    font-weight: 700;
    padding: 8px 20px;
}

/* Grayscale + Color on Hover */
.grayscale {
    filter: grayscale(100%);
    transition: var(--transition-base);
}

.grayscale:hover {
    filter: grayscale(0%);
    opacity: 1 !important;
}

/* --- Responsive Engine --- */
@media (max-width: 991px) {
    .nav-menu {
        display: none;
    }
}

@media (max-width: 768px) {
    .hero-enterprise {
        padding: 80px 0;
        text-align: center;
    }

    .hero-enterprise h1 {
        font-size: 2.5rem;
    }

    .hero-enterprise p {
        margin-left: auto;
        margin-right: auto;
    }

    .nvu-card {
        padding: 30px;
    }
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.reveal {
    animation: fadeInUp 0.8s ease forwards;
}

.brand-img {
    max-height: 450px;
    animation: float 6s ease-in-out infinite;
    border: 5px solid rgba(255, 255, 255, 0.1);
}

@keyframes float {
    0% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-20px);
    }

    100% {
        transform: translateY(0px);
    }
}