/* ===== Global Base Styles ===== */
html {
        scroll-behavior: smooth;
}

body {
        font-family: 'Inter', 'Segoe UI', sans-serif;
        margin: 0 auto;
        background: linear-gradient(to bottom right, #eaf1fb, #f8f9fc);
        color: #2c3e50;
        padding: 40px 20px;
        max-width: 1000px;
        line-height: 1.7;
}

/* ===== Header ===== */
header {
        text-align: center;
        margin-bottom: 40px;
}

.contact-info {
        margin: 20px 0;
        display: flex;
        flex-direction: column;
        gap: 10px;
        align-items: center;
}

.contact-item {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 1rem;
        line-height: 1.5;
}

.contact-icon {
        font-size: 1.2rem;
        min-width: 24px;
        text-align: center;
}

.contact-item span,
.contact-item a {
        white-space: nowrap;
}

h1 {
        font-size: 2.5rem;
        margin-bottom: 0.5rem;
        color: #2d3a58;
}

h2 {
        font-size: 1.6rem;
        margin-top: 0;
        color: #2c3e50;
}

/* ===== Navigation ===== */
nav {
        margin-bottom: 40px;
        padding: 20px 0;
}

.nav-container {
        position: relative;
        text-align: center;
}

/* Hamburger Button */
.hamburger {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        width: 50px;
        height: 50px;
        background: #004080;
        border: none;
        border-radius: 8px;
        cursor: pointer;
        margin: 0 auto;
        box-shadow: 0 3px 6px rgba(0, 0, 0, 0.1);
        transition: background-color 0.3s ease;
}

.hamburger:hover {
        background-color: #002d5a;
}

.hamburger span {
        width: 25px;
        height: 3px;
        background-color: white;
        margin: 3px 0;
        transition: 0.3s;
        border-radius: 2px;
}

.hamburger.active span:nth-child(1) {
        transform: rotate(-45deg) translate(-5px, 6px);
}

.hamburger.active span:nth-child(2) {
        opacity: 0;
}

.hamburger.active span:nth-child(3) {
        transform: rotate(45deg) translate(-5px, -6px);
}

/* Navigation Menu */
.nav-menu {
        list-style: none;
        position: absolute;
        top: 60px;
        left: 0;
        right: 0;
        background-color: white;
        flex-direction: column;
        padding: 30px 20px;
        border-radius: 12px;
        box-shadow: 0 6px 18px rgba(0, 0, 0, 0.1);
        transform: translateY(-20px);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        z-index: 1000;
        margin: 0;
        display: flex;
        gap: 15px;
}

/* Show navigation menu when active */
.nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
}

.nav-menu li {
        display: flex;
        align-items: center;
        margin-bottom: 15px;
}

.nav-menu li:last-child {
        margin-bottom: 0;
}

.nav-menu li a {
        background-color: #004080;
        color: white;
        padding: 14px 26px;
        border-radius: 8px;
        font-weight: 600;
        font-size: 1rem;
        transition: background-color 0.3s ease;
        box-shadow: 0 3px 6px rgba(0, 0, 0, 0.1);
        text-align: center;
}

.nav-menu li a:hover {
        background-color: #002d5a;
}

/* ===== Dark Mode Toggle Aligned with Nav Buttons ===== */
.theme-toggle {
        display: flex;
        align-items: center;
        cursor: pointer;
}

        .theme-toggle input {
                display: none;
        }

        .theme-toggle .slider {
                width: 60px;
                height: 30px;
                background-color: #004080;
                border-radius: 30px;
                position: relative;
                box-shadow: 0 3px 6px rgba(0, 0, 0, 0.1);
        }

                .theme-toggle .slider::before {
                        content: "";
                        position: absolute;
                        top: 4px;
                        left: 4px;
                        width: 22px;
                        height: 22px;
                        background-color: white;
                        border-radius: 50%;
                        transition: transform 0.3s ease;
                }

        .theme-toggle input:checked + .slider {
                background-color: #002d5a;
        }

                .theme-toggle input:checked + .slider::before {
                        transform: translateX(30px);
                }

/* ===== Profile Image ===== */
.pic-card {
        display: flex;
        justify-content: center;
        margin-bottom: 30px;
}

        .pic-card img {
                width: 180px;
                height: 180px;
                object-fit: cover;
                border-radius: 50%;
                border: 5px solid white;
                box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
        }

/* ===== Section Cards ===== */
section {
        background-color: white;
        border-radius: 12px;
        padding: 25px;
        margin-bottom: 30px;
        box-shadow: 0 6px 18px rgba(0, 0, 0, 0.06);
        transition: transform 0.3s ease, box-shadow 0.3s ease;
}

        section:hover {
                transform: translateY(-2px);
                box-shadow: 0 12px 25px rgba(0, 0, 0, 0.1);
        }

/* ===== Collapsible Sections ===== */
.collapsible-section {
        overflow: hidden;
}

.section-header {
        cursor: pointer;
        user-select: none;
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 10px 0;
        margin-bottom: 15px;
        border-bottom: 2px solid #e0e0e0;
        transition: all 0.3s ease;
}

.section-header:hover {
        color: #004080;
}

.chevron {
        font-size: 1rem;
        transition: transform 0.3s ease;
        color: #004080;
        font-weight: bold;
}

.section-content {
        overflow: hidden;
        transition: max-height 0.4s ease;
}

.collapsible-section.collapsed .section-content {
        max-height: 0 !important;
}

/* ===== Links ===== */
a {
        color: #0066cc;
        font-weight: 500;
        text-decoration: none;
        transition: color 0.3s;
}

        a:hover {
                color: #004080;
                text-decoration: underline;
        }

/* ===== Projects Section ===== */
.project-container {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 25px;
}

.project-card {
        background: white;
        border-radius: 12px;
        padding: 20px;
        box-shadow: 0 6px 14px rgba(0, 0, 0, 0.06);
        transition: all 0.3s ease;
        display: flex;
        flex-direction: column;
}

        .project-card:hover {
                transform: translateY(-4px);
                box-shadow: 0 10px 24px rgba(0, 0, 0, 0.08);
        }

        .project-card h3 {
                font-size: 1.2rem;
                color: #1e3a8a;
                margin-bottom: 8px;
        }

        .project-card p {
                font-size: 0.95rem;
                color: #555;
        }

        .project-card img {
                width: 100%;
                border-radius: 8px;
                margin: 15px 0;
        }

.project-tags {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
}

.project-tag {
        background-color: #e8f0fe;
        color: #1e3a8a;
        padding: 4px 10px;
        border-radius: 50px;
        font-size: 0.75rem;
        font-weight: 600;
}

/* ===== Footer ===== */
footer {
        text-align: center;
        color: #777;
        font-size: 0.9rem;
        margin-top: 60px;
}

/* ===== Dark Mode Styling ===== */
.dark-mode {
        background: #121212;
        color: #e0e0e0;
}

        .dark-mode header {
                color: #e0e0e0;
        }

        .dark-mode h1,
        .dark-mode h2 {
                color: #bbdefb;
        }

        .dark-mode p,
        .dark-mode li {
                color: #cccccc;
        }

        .dark-mode .nav-menu li a {
                background-color: #2c3e50;
                color: #ffffff;
        }

                .dark-mode .nav-menu li a:hover {
                        background-color: #3b4a6b;
                }

        .dark-mode .hamburger {
                background-color: #2c3e50;
        }

                .dark-mode .hamburger:hover {
                        background-color: #3b4a6b;
                }

        .dark-mode section,
        .dark-mode .project-card {
                background-color: #1e1e1e;
                box-shadow: 0 4px 10px rgba(255, 255, 255, 0.05);
        }

                .dark-mode .project-card h3 {
                        color: #82b1ff;
                }

                .dark-mode .project-card p {
                        color: #b0b0b0;
                }

        .dark-mode .project-tag {
                background-color: #2c3e5d;
                color: #a3c9ff;
        }

        .dark-mode a {
                color: #90caf9;
        }

                .dark-mode a:hover {
                        color: #bbdefb;
                }

        .dark-mode footer {
                color: #aaa;
        }

/* ===== Animation ===== */
.fade-in {
        opacity: 0;
        transform: translateY(30px);
        transition: all 0.6s ease-out;
}

        .fade-in.visible {
                opacity: 1;
                transform: translateY(0);
        }

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
        h1 {
                font-size: 2rem;
        }


        /* Show navigation menu when active */
        .nav-menu.active {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
        }

        .nav-menu li {
                width: 100%;
                margin-bottom: 10px;
        }

        .nav-menu li a {
                width: 100%;
                display: block;
                text-align: center;
        }

        /* Dark mode styles for mobile menu */
        .dark-mode .nav-menu {
                background-color: #1e1e1e;
                box-shadow: 0 6px 18px rgba(255, 255, 255, 0.05);
        }

        .pic-card img {
                width: 130px;
                height: 130px;
        }
}