:root {
    --primary-color: #44c1ed;
    --secondary-color: #ffb377;
    --gradient-primary: linear-gradient(90deg, #44c1ed 0%, #22bbbc 100%);
    --gradient-secondary: linear-gradient(90deg, #ffb377 0%, #ff7961 100%);
    --text-color: #222;
    --bg-light: #f8f9fa;
    --card-shadow: 0 5px 15px rgba(44,62,80,0.08);
    --border-radius: 16px;
}

/* Navbar */
.navbar {
    z-index: 1000;
    display: flex;
    height: 60px;
    width: 100%;
    background-color: #fff;
    align-items: center;
    position: fixed;
    opacity: .97;
    box-shadow: 0px .1px 3px;
    top: 0;
    left: 0;
    animation: navFadeIn 1.1s;
    transition: height 0.2s;
}
@keyframes navFadeIn {
    from { opacity: 0; transform: translateY(-40px);}
    to { opacity: 1; transform: translateY(0);}
}
.navlogo {
    flex-shrink: 0;
    height: 45px;
    width: 90px;
    margin-left: 30px;
}
.navlogo img {
    height: 45px;
    width: 90px;
    animation: logoPop 1.5s;
}
@keyframes logoPop {
    from { transform: scale(0.7) rotate(-15deg); opacity: 0; }
    60% { transform: scale(1.1) rotate(3deg); opacity: 1; }
    to { transform: scale(1) rotate(0); opacity: 1; }
}
.navtext ol {
    display: flex;
    gap: 40px;
    margin-left: 60px;
    font-family: cursive;
    color: #4b5451;
    font-weight: bold;
    flex-wrap: wrap;
    padding: 0;
}
.navtext ol li { list-style: none; }
.navtext ol li a {
    text-decoration: none;
    color: black;
    position: relative;
    transition: color .3s;
    font-size: 1.02rem;
    padding: 6px 0;
    border-radius: 7px;
}
.navtext ol li a:hover {
    color: orange;
    background: #fff7e0;
    transition: color .25s, background .19s;
}
@media (max-width: 900px) {
    .navtext ol {
        gap: 20px;
        margin-left: 10px;
    }
    .navbar {
        height: auto;
        flex-wrap: wrap;
        min-height: 65px;
    }
}
@media (max-width: 600px) {
    .navlogo {
        margin-left: 10px;
        width: 65px;
        height: 32px;
    }
    .navlogo img {
        height: 32px;
        width: 65px;
    }
    .navtext ol {
        gap: 13px;
        font-size: 0.97rem;
        margin-left: 5px;
    }
    .navbar {
        flex-direction: column;
        align-items: flex-start;
        height: auto;
        padding-bottom: 4px;
    }
}

/* Main Container - FIXED PADDING! */
.competitive-container {
    padding-top: 60px;
    min-height: 100vh;
    background: var(--bg-light);
    transition: padding 0.2s;
}
@media (max-width: 600px) {
    .competitive-container {
        padding-top: 50px;
    }
}

/* Hero Section with Animated Gradient */
.competitive-hero {
    background: var(--gradient-primary);
    color: white;
    text-align: center;
    padding: 4rem 2rem 3rem 2rem;
    margin-bottom: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
    animation: heroGradientMove 6s ease-in-out infinite alternate;
    position: relative;
    overflow: hidden;
}
@keyframes heroGradientMove {
    0% { background-position: 0% 50%; }
    100% { background-position: 100% 50%; }
}
.competitive-hero h1 {
    font-size: 2.7rem;
    margin-bottom: 1rem;
    letter-spacing: 0.5px;
    font-family: 'Montserrat', cursive, sans-serif;
    animation: fadeInDown 1.2s;
}
@keyframes fadeInDown {
    0% { opacity: 0; transform: translateY(-60px);}
    70% { opacity: 1; transform: translateY(10px);}
    100% { opacity: 1; transform: translateY(0);}
}
.competitive-hero p {
    font-size: 1.17rem;
    max-width: 700px;
    margin: 0 auto 2rem auto;
    opacity: 0.92;
    animation: fadeIn 1.3s;
}
.stats {
    display: flex;
    justify-content: center;
    gap: 2.3rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}
.stat-item {
    text-align: center;
    animation: popUp 0.9s cubic-bezier(.33,1.4,.44,1) backwards;
}
@keyframes popUp {
    from { opacity: 0; transform: scale(0.7);}
    80% { opacity: 1; transform: scale(1.08);}
    to { opacity: 1; transform: scale(1);}
}
.stat-number {
    font-size: 2rem;
    font-weight: bold;
    display: block;
    margin-bottom: 0.4rem;
    color: #fffbe0;
    text-shadow: 0 2px 10px #22bbbc55;
    animation: pulseColor 2.3s infinite;
}
@keyframes pulseColor {
    0%, 100% { color: #fffbe0;}
    50% { color: #fff; text-shadow: 0 5px 20px #44c1ed90;}
}
.stat-label {
    font-size: 1rem;
    opacity: 0.9;
    color: #e0f7fa;
    letter-spacing: 0.4px;
}
@media (max-width: 900px) {
    .stats {
        gap: 1.1rem;
    }
    .stat-item {
        min-width: 110px;
    }
}
@media (max-width: 600px) {
    .competitive-hero {
        padding: 2.1rem 1rem 1.3rem 1rem;
        border-radius: 12px;
    }
    .competitive-hero h1 {
        font-size: 1.25rem;
    }
    .stat-number {
        font-size: 1.3rem;
    }
    .stat-item {
        min-width: 90px;
    }
    .stats {
        gap: 0.4rem;
        flex-direction: column;
        align-items: center;
    }
}

/* Problem Filters */
.problem-filters {
    display: flex;
    justify-content: center;
    gap: 2rem;
    padding: 2rem 1rem;
    background: #fff;
    margin: 0 5%;
    border-radius: 15px;
    box-shadow: var(--card-shadow);
    flex-wrap: wrap;
    animation: fadeIn 0.9s;
}
.filter-group select,
.search-group input {
    padding: 0.8rem 1.5rem;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
    min-width: 160px;
    background: #f8f9fa;
    transition: border .2s, box-shadow .2s;
}
.filter-group select:focus,
.search-group input:focus {
    border: 1.5px solid #44c1ed;
    box-shadow: 0 0 8px #44c1ed33;
    outline: none;
}
.search-group {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}
#searchBtn {
    padding: 0.8rem 1.5rem;
    border: none;
    background: var(--primary-color);
    color: white;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.3s;
    font-size: 1rem;
    box-shadow: 0 1px 4px #22bbbc22;
}
#searchBtn:hover {
    background: var(--secondary-color);
    color: #fff;
}
@media (max-width: 900px) {
    .problem-filters {
        gap: 1rem;
        padding: 1.1rem 0.7rem;
        margin: 0 2%;
    }
    .filter-group select, .search-group input {
        min-width: 120px;
        font-size: 0.96rem;
        padding: 0.6rem 1rem;
    }
}
@media (max-width: 600px) {
    .problem-filters {
        flex-direction: column;
        gap: 0.7rem;
        padding: 0.8rem 0.3rem;
        margin: 0 1.5%;
        border-radius: 9px;
    }
    .filter-group, .search-group {
        width: 100%;
        justify-content: flex-start;
    }
    #searchBtn {
        font-size: 0.97rem;
        padding: 0.65rem 1rem;
    }
}

/* Problems Grid */
.problems-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
    gap: 2rem;
    padding: 2rem 5%;
    max-width: 1400px;
    margin: 0 auto;
    animation: fadeInUp 1.15s;
}
@keyframes fadeInUp {
    0% { opacity: 0; transform: translateY(30px);}
    100% { opacity: 1; transform: translateY(0);}
}
.problem-card {
    background: #fff;
    border-radius: var(--border-radius);
    padding: 1.5rem 1.2rem;
    box-shadow: var(--card-shadow);
    transition: transform 0.25s cubic-bezier(.41,1.4,.54,1), box-shadow 0.16s;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    animation: zoomIn 0.9s;
}
.problem-card:hover, .problem-card:focus-within {
    transform: translateY(-6px) scale(1.03) rotate(-1deg);
    box-shadow: 0 10px 32px -5px #44c1ed25, 0 2px 7px #ffb37722;
    z-index: 3;
}
@media (max-width: 900px) {
    .problems-grid {
        grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
        gap: 1.1rem;
        padding: 1.5rem 2.5%;
    }
    .problem-card {
        padding: 1.1rem 0.8rem;
        border-radius: 9px;
    }
}
@media (max-width: 600px) {
    .problems-grid {
        grid-template-columns: 1fr;
        gap: 0.7rem;
        padding: 1rem 0.5%;
    }
    .problem-card {
        padding: 0.8rem 0.6rem;
        border-radius: 7px;
    }
}

/* Difficulty Badges */
.difficulty-badge {
    padding: 0.3rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1rem;
    display: inline-block;
    animation: fadeIn 1.1s;
}
.difficulty-badge.beginner { background: #e3fcef; color: #22bbbc; }
.difficulty-badge.easy { background: #e8f5e9; color: #44c1ed; }
.difficulty-badge.medium { background: #fff3e0; color: #FF9800; }
.difficulty-badge.hard { background: #ffebee; color: #f44336; }
@media (max-width: 600px) {
    .difficulty-badge {
        font-size: 0.86rem;
        padding: 0.2rem 0.7rem;
    }
}

/* Single Problem View */
.single-problem-view {
    background: #fff;
    padding: 2rem 1.5rem;
    border-radius: var(--border-radius);
    margin: 0 5%;
    box-shadow: var(--card-shadow);
    animation: fadeInUp 1.1s;
    transition: margin 0.2s, padding 0.2s;
}
.problem-header {
    display: flex;
    align-items: center;
    gap: 2rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}
@media (max-width: 900px) {
    .single-problem-view {
        padding: 1.1rem 0.5rem;
        border-radius: 9px;
        margin: 0 2%;
    }
    .problem-header {
        gap: 1rem;
        margin-bottom: 1.1rem;
    }
}
@media (max-width: 600px) {
    .single-problem-view {
        padding: 0.8rem 0.2rem;
        border-radius: 7px;
        margin: 0 1.5%;
    }
    .problem-header {
        gap: 0.5rem;
        margin-bottom: 0.7rem;
        flex-direction: column;
        align-items: flex-start;
    }
}

/* Back Button */
.back-btn {
    padding: 0.8rem 1.5rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: background 0.3s;
    font-size: 1rem;
    font-weight: 500;
    animation: fadeInLeft 1.1s;
}
.back-btn:hover {
    background: var(--secondary-color);
}
@keyframes fadeInLeft {
    0% { opacity: 0; transform: translateX(-40px);}
    100% { opacity: 1; transform: translateX(0);}
}

/* Problem Body/Description/Examples/Solution */
.problem-body {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}
.problem-description-section,
.examples-section,
.solution-section {
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 8px #44c1ed12;
    animation: fadeIn 1.2s;
}
.examples-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}
@media (max-width: 900px) {
    .problem-body {
        gap: 1rem;
    }
    .problem-description-section,
    .examples-section,
    .solution-section {
        padding: 1rem;
        border-radius: 6px;
    }
    .examples-section {
        gap: 0.5rem;
    }
}
@media (max-width: 600px) {
    .examples-section {
        grid-template-columns: 1fr;
    }
    .problem-description-section,
    .examples-section,
    .solution-section {
        padding: 0.58rem;
        border-radius: 4px;
    }
    .problem-body {
        gap: 0.7rem;
    }
}

/* Code Editor and Buttons */
.code-editor-container {
    margin-top: 1rem;
}
#languageSelect {
    width: 180px;
    padding: 0.5rem;
    margin-bottom: 1rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}
#codeEditor {
    width: 100%;
    min-height: 220px;
    padding: 1rem;
    font-family: 'Courier New', monospace;
    font-size: 14px;
    line-height: 1.5;
    border: 1px solid #ddd;
    border-radius: 8px;
    resize: vertical;
    box-shadow: 0 1px 6px #44c1ed10;
    background: #f6fcff;
    transition: border 0.2s;
}
#codeEditor:focus {
    border: 1.5px solid #44c1ed;
    outline: none;
}
.button-group {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
    flex-wrap: wrap;
}
.submit-btn,
.test-btn {
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s;
    font-size: 1rem;
    box-shadow: 0 2px 7px #ffb37722;
}
.submit-btn {
    background: var(--primary-color);
    color: white;
}
.test-btn {
    background: #f8f9fa;
    color: var(--text-color);
    border: 1px solid #ddd;
}
.submit-btn:hover {
    background: var(--secondary-color);
}
.test-btn:hover {
    background: #e9ecef;
}
@media (max-width: 600px) {
    .button-group {
        flex-direction: column;
        gap: 0.6rem;
    }
    .submit-btn, .test-btn {
        font-size: 0.98rem;
        padding: 0.7rem 1rem;
    }
    #languageSelect {
        width: 100%;
        font-size: 0.97rem;
    }
    #codeEditor {
        min-height: 120px;
        font-size: 13px;
        padding: 0.7rem;
    }
}

/* Example Inputs/Outputs */
.example-input pre,
.example-output pre {
    background: #fff;
    padding: 1rem;
    border-radius: 8px;
    border: 1px solid #ddd;
    font-size: 0.97rem;
    font-family: 'Fira Mono', 'Courier New', monospace;
    word-break: break-word;
    overflow-x: auto;
    margin: 0.5rem 0 1rem 0;
    animation: fadeIn 1.2s;
}
@media (max-width: 600px) {
    .example-input pre,
    .example-output pre {
        font-size: 0.91rem;
        padding: 0.6rem;
        border-radius: 4px;
    }
}

/* Custom Animations */
@keyframes fadeIn {
    from { opacity: 0;}
    to { opacity: 1;}
}
@keyframes fadeInUp {
    0% { opacity: 0; transform: translateY(30px);}
    100% { opacity: 1; transform: translateY(0);}
}
@keyframes fadeInDown {
    0% { opacity: 0; transform: translateY(-60px);}
    100% { opacity: 1; transform: translateY(0);}
}
@keyframes zoomIn {
    from { opacity: 0; transform: scale(0.95);}
    80% { opacity: 1; transform: scale(1.04);}
    to { opacity: 1; transform: scale(1);}
}